| /* |
| * Copyright (c) 2011-2016 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /** ------------------------------------------------------------------------- * |
| ------------------------------------------------------------------------- * |
| |
| \file csr_neighbor_roam.c |
| |
| Implementation for the simple roaming algorithm for 802.11r Fast |
| transitions and Legacy roaming for Android platform. |
| ========================================================================== */ |
| |
| #include "wma_types.h" |
| #include "cds_mq.h" |
| #include "csr_inside_api.h" |
| #include "sms_debug.h" |
| #include "sme_qos_internal.h" |
| #include "sme_inside.h" |
| #include "host_diag_core_event.h" |
| #include "host_diag_core_log.h" |
| #include "csr_api.h" |
| #include "sme_api.h" |
| #include "csr_neighbor_roam.h" |
| #include "mac_trace.h" |
| #include "cds_concurrency.h" |
| |
| #define NEIGHBOR_ROAM_DEBUG sms_log |
| |
| static void csr_neighbor_roam_reset_channel_info(tpCsrNeighborRoamChannelInfo |
| rChInfo); |
| static void csr_neighbor_roam_reset_preauth_control_info(tpAniSirGlobal pMac, |
| uint8_t sessionId); |
| |
| CDF_STATUS csr_roam_copy_connected_profile(tpAniSirGlobal pMac, uint32_t sessionId, |
| tCsrRoamProfile *pDstProfile); |
| |
| static CDF_STATUS csr_neighbor_roam_issue_preauth_req(tpAniSirGlobal pMac, |
| uint8_t sessionId); |
| |
| #define CSR_NEIGHBOR_ROAM_STATE_TRANSITION(mac_ctx, newstate, session) \ |
| { \ |
| mac_ctx->roam.neighborRoamInfo[session].prevNeighborRoamState = \ |
| mac_ctx->roam.neighborRoamInfo[session].neighborRoamState; \ |
| mac_ctx->roam.neighborRoamInfo[session].neighborRoamState = newstate; \ |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, \ |
| FL("Sessionid (%d) NeighborRoam transition from %s to %s"), \ |
| session, csr_neighbor_roam_state_to_string( \ |
| mac_ctx->roam.neighborRoamInfo[session].prevNeighborRoamState),\ |
| csr_neighbor_roam_state_to_string(newstate)); \ |
| } |
| |
| uint8_t *csr_neighbor_roam_state_to_string(uint8_t state) |
| { |
| switch (state) { |
| CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_CLOSED); |
| CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_INIT); |
| CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_CONNECTED); |
| CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING); |
| CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING); |
| CASE_RETURN_STRING(eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE); |
| default: |
| return "eCSR_NEIGHBOR_ROAM_STATE_UNKNOWN"; |
| } |
| |
| } |
| |
| #ifdef FEATURE_WLAN_LFR_METRICS |
| /** |
| * csr_neighbor_roam_send_lfr_metric_event() - Send event of LFR metric |
| * @mac_ctx: Handle returned by mac_open. |
| * @session_id: Session information |
| * @bssid: BSSID of attempted AP |
| * @status: Result of LFR operation |
| * |
| * LFR metrics - pre-auth completion metric |
| * Send the event to supplicant indicating pre-auth result |
| * |
| * Return: void |
| */ |
| |
| static void csr_neighbor_roam_send_lfr_metric_event( |
| tpAniSirGlobal mac_ctx, |
| uint8_t session_id, |
| tSirMacAddr bssid, |
| eRoamCmdStatus status) |
| { |
| tCsrRoamInfo *roam_info; |
| |
| roam_info = cdf_mem_malloc(sizeof(tCsrRoamInfo)); |
| if (NULL == roam_info) { |
| sms_log(mac_ctx, LOG1, FL("Memory allocation failed!")); |
| } else { |
| cdf_mem_copy((void *)roam_info->bssid, |
| (void *)bssid, sizeof(*roam_info)); |
| csr_roam_call_callback(mac_ctx, session_id, roam_info, 0, |
| status, 0); |
| cdf_mem_free(roam_info); |
| } |
| } |
| #else |
| /* Empty inline function will be a no-op */ |
| static inline void csr_neighbor_roam_send_lfr_metric_event( |
| tpAniSirGlobal mac_ctx, |
| uint8_t session_id, |
| tSirMacAddr bssid, |
| eRoamCmdStatus status) |
| { |
| ; |
| } |
| #endif |
| |
| /** |
| * csr_neighbor_roam_free_neighbor_roam_bss_node() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @neighborRoamBSSNode: Neighbor Roam BSS Node to be freed |
| * |
| * This function frees all the internal pointers CSR NeighborRoam BSS Info |
| * and also frees the node itself |
| * |
| * Return: None |
| */ |
| void csr_neighbor_roam_free_neighbor_roam_bss_node(tpAniSirGlobal pMac, |
| tpCsrNeighborRoamBSSInfo |
| neighborRoamBSSNode) |
| { |
| if (neighborRoamBSSNode) { |
| if (neighborRoamBSSNode->pBssDescription) { |
| cdf_mem_free(neighborRoamBSSNode->pBssDescription); |
| neighborRoamBSSNode->pBssDescription = NULL; |
| } |
| cdf_mem_free(neighborRoamBSSNode); |
| neighborRoamBSSNode = NULL; |
| } |
| |
| return; |
| } |
| |
| /** |
| * csr_neighbor_roam_remove_roamable_ap_list_entry() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @pList: The list from which the entry should be removed |
| * @pNeighborEntry: Neighbor Roam BSS Node to be removed |
| * |
| * This function removes a given entry from the given list |
| * |
| * Return: true if successfully removed, else false |
| */ |
| bool csr_neighbor_roam_remove_roamable_ap_list_entry(tpAniSirGlobal pMac, |
| tDblLinkList *pList, |
| tpCsrNeighborRoamBSSInfo |
| pNeighborEntry) |
| { |
| if (pList) { |
| return csr_ll_remove_entry(pList, &pNeighborEntry->List, |
| LL_ACCESS_LOCK); |
| } |
| |
| sms_log(pMac, LOGE, |
| FL |
| ("Removing neighbor BSS node from list failed. Current count = %d"), |
| csr_ll_count(pList)); |
| |
| return false; |
| } |
| |
| /** |
| * csr_neighbor_roam_next_roamable_ap() - Get next AP from roamable AP list |
| * @mac_ctx - The handle returned by mac_open. |
| * @plist - The list from which the entry should be returned |
| * @neighbor_entry - Neighbor Roam BSS Node whose next entry should be returned |
| * |
| * Gets the entry next to passed entry. If NULL is passed, return the entry |
| * in the head of the list |
| * |
| * Return: Neighbor Roam BSS Node to be returned |
| */ |
| tpCsrNeighborRoamBSSInfo csr_neighbor_roam_next_roamable_ap( |
| tpAniSirGlobal mac_ctx, tDblLinkList *llist, |
| tpCsrNeighborRoamBSSInfo neighbor_entry) |
| { |
| tListElem *entry = NULL; |
| tpCsrNeighborRoamBSSInfo result = NULL; |
| |
| if (llist) { |
| if (NULL == neighbor_entry) |
| entry = csr_ll_peek_head(llist, LL_ACCESS_LOCK); |
| else |
| entry = csr_ll_next(llist, &neighbor_entry->List, |
| LL_ACCESS_LOCK); |
| if (entry) |
| result = GET_BASE_ADDR(entry, tCsrNeighborRoamBSSInfo, |
| List); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * csr_neighbor_roam_free_roamable_bss_list() - Frees roamable APs list |
| * @mac_ctx: The handle returned by mac_open. |
| * @llist: Neighbor Roam BSS List to be emptied |
| * |
| * Empties and frees all the nodes in the roamable AP list |
| * |
| * Return: none |
| */ |
| void csr_neighbor_roam_free_roamable_bss_list(tpAniSirGlobal mac_ctx, |
| tDblLinkList *llist) |
| { |
| tpCsrNeighborRoamBSSInfo result = NULL; |
| |
| NEIGHBOR_ROAM_DEBUG(mac_ctx, LOG2, |
| FL("Emptying the BSS list. Current count = %d"), |
| csr_ll_count(llist)); |
| |
| /* |
| * Pick up the head, remove and free the node till |
| * the list becomes empty |
| */ |
| while ((result = csr_neighbor_roam_next_roamable_ap(mac_ctx, llist, |
| NULL)) != NULL) { |
| csr_neighbor_roam_remove_roamable_ap_list_entry(mac_ctx, |
| llist, result); |
| csr_neighbor_roam_free_neighbor_roam_bss_node(mac_ctx, result); |
| } |
| return; |
| } |
| |
| static void csr_neighbor_roam_trigger_handoff(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| if (csr_roam_is_fast_roam_enabled(pMac, sessionId)) { |
| csr_neighbor_roam_issue_preauth_req(pMac, sessionId); |
| } else { |
| sms_log(pMac, LOGE, FL("Roaming is diisabled")); |
| } |
| } |
| |
| CDF_STATUS |
| csr_neighbor_roam_update_fast_roaming_enabled(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| const bool fastRoamEnabled) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| /* set fast roam enable/disable flag */ |
| pMac->roam.configParam.isFastRoamIniFeatureEnabled = fastRoamEnabled; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| if (true == fastRoamEnabled) { |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_START, |
| REASON_CONNECT); |
| } else { |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_STOP, |
| REASON_DISCONNECTED); |
| } |
| break; |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL |
| ("Currently in INIT state, Nothing to do")); |
| break; |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL |
| ("Unexpected state %s, returning failure"), |
| mac_trace_get_neighbour_roam_state |
| (pNeighborRoamInfo->neighborRoamState)); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| #ifdef FEATURE_WLAN_ESE |
| CDF_STATUS csr_neighbor_roam_update_ese_mode_enabled(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| const bool eseMode) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| if (true == eseMode) { |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_START, |
| REASON_CONNECT); |
| } else if (false == eseMode) { |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_STOP, |
| REASON_DISCONNECTED); |
| } |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, |
| FL |
| ("Currently in INIT state, Nothing to do")); |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL |
| ("Unexpected state %d, returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| break; |
| } |
| return cdf_status; |
| } |
| #endif |
| |
| CDF_STATUS csr_neighbor_roam_set_lookup_rssi_threshold(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t |
| neighborLookupRssiThreshold) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, " |
| "sending ROAM_SCAN_OFFLOAD_UPDATE_CFG.")); |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold = |
| neighborLookupRssiThreshold; |
| pNeighborRoamInfo->currentNeighborLookupThreshold = |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_LOOKUP_THRESH_CHANGED); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, " |
| "just set lookupRssi threshold.")); |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold = |
| neighborLookupRssiThreshold; |
| pNeighborRoamInfo->currentNeighborLookupThreshold = |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL |
| ("Unexpected state %s, returning failure"), |
| mac_trace_get_neighbour_roam_state |
| (pNeighborRoamInfo->neighborRoamState)); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| CDF_STATUS |
| csr_neighbor_roam_set_opportunistic_scan_threshold_diff(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t |
| nOpportunisticThresholdDiff) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, " |
| "sending ROAM_SCAN_OFFLOAD_UPDATE_CFG")); |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->currentOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| |
| csr_roam_offload_scan(pMac, |
| sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_OPPORTUNISTIC_THRESH_DIFF_CHANGED); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, " |
| "just set opportunistic threshold diff")); |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->currentOpportunisticThresholdDiff = |
| nOpportunisticThresholdDiff; |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| CDF_STATUS |
| csr_neighbor_roam_set_roam_rescan_rssi_diff(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t nRoamRescanRssiDiff) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, " |
| "sending ROAM_SCAN_OFFLOAD_UPDATE_CFG.")); |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| pNeighborRoamInfo->currentRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_RESCAN_RSSI_DIFF_CHANGED); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, " |
| "just set rescan rssi diff")); |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| pNeighborRoamInfo->currentRoamRescanRssiDiff = |
| nRoamRescanRssiDiff; |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| CDF_STATUS |
| csr_neighbor_roam_set_roam_bmiss_first_bcnt(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t nRoamBmissFirstBcnt) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, " |
| "sending ROAM_SCAN_OFFLOAD_UPDATE_CFG.")); |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt = |
| nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->currentRoamBmissFirstBcnt = |
| nRoamBmissFirstBcnt; |
| |
| csr_roam_offload_scan(pMac, |
| sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_BMISS_FIRST_BCNT_CHANGED); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOG2, FL |
| ("Currently in INIT state, safe to set roam rescan rssi diff")); |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt = |
| nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->currentRoamBmissFirstBcnt = |
| nRoamBmissFirstBcnt; |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| CDF_STATUS |
| csr_neighbor_roam_set_roam_bmiss_final_bcnt(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t nRoamBmissFinalBcnt) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, " |
| "sending ROAM_SCAN_OFFLOAD_UPDATE_CFG.")); |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt = |
| nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->currentRoamBmissFinalBcnt = |
| nRoamBmissFinalBcnt; |
| |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_BMISS_FINAL_BCNT_CHANGED); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, " |
| "just set roam fianl bmiss count")); |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt = |
| nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->currentRoamBmissFinalBcnt = |
| nRoamBmissFinalBcnt; |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| CDF_STATUS |
| csr_neighbor_roam_set_roam_beacon_rssi_weight(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t nRoamBeaconRssiWeight) |
| { |
| CDF_STATUS cdf_status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in CONNECTED state, " |
| "sending ROAM_SCAN_OFFLOAD_UPDATE_CFG.")); |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| pNeighborRoamInfo->currentRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_ROAM_BEACON_RSSI_WEIGHT_CHANGED); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("Currently in INIT state, " |
| "just set roam beacon rssi weight")); |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| pNeighborRoamInfo->currentRoamBeaconRssiWeight = |
| nRoamBeaconRssiWeight; |
| break; |
| |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, |
| LOGE, |
| FL("Unexpected state %d returning failure"), |
| pNeighborRoamInfo->neighborRoamState); |
| cdf_status = CDF_STATUS_E_FAILURE; |
| break; |
| } |
| return cdf_status; |
| } |
| |
| /*CleanUP Routines*/ |
| static void csr_neighbor_roam_reset_channel_info(tpCsrNeighborRoamChannelInfo |
| rChInfo) |
| { |
| if ((rChInfo->IAPPNeighborListReceived == false) && |
| (rChInfo->currentChannelListInfo.numOfChannels)) { |
| rChInfo->currentChanIndex = |
| CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| rChInfo->currentChannelListInfo.numOfChannels = 0; |
| |
| if (rChInfo->currentChannelListInfo.ChannelList) |
| cdf_mem_free(rChInfo->currentChannelListInfo. |
| ChannelList); |
| |
| rChInfo->currentChannelListInfo.ChannelList = NULL; |
| } else { |
| rChInfo->currentChanIndex = 0; |
| } |
| } |
| |
| static void csr_neighbor_roam_reset_preauth_control_info(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| pNeighborRoamInfo->is11rAssoc = false; |
| /* Purge pre-auth fail list */ |
| csr_neighbor_roam_purge_preauth_failed_list(pMac); |
| |
| pNeighborRoamInfo->FTRoamInfo.preauthRspPending = false; |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| /* Do not free up the preauth done list here */ |
| pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| pNeighborRoamInfo->FTRoamInfo.neighborRptPending = false; |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| cdf_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, |
| sizeof(tCsrNeighborReportBssInfo) * |
| MAX_BSS_IN_NEIGHBOR_RPT); |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| cdf_mem_zero(&pNeighborRoamInfo->handoffReqInfo, |
| sizeof(tCsrHandoffRequest)); |
| } |
| |
| /** |
| * csr_neighbor_roam_reset_connected_state_control_info() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @sessionId : session id |
| * |
| * This function will reset the neighbor roam control info data structures. |
| * This function should be invoked whenever we move to CONNECTED state from |
| * any state other than INIT state |
| * |
| * Return: None |
| */ |
| void csr_neighbor_roam_reset_connected_state_control_info(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| csr_neighbor_roam_reset_channel_info(&pNeighborRoamInfo->roamChannelInfo); |
| csr_neighbor_roam_free_roamable_bss_list(pMac, |
| &pNeighborRoamInfo->roamableAPList); |
| |
| /* Do not free up the preauth done list here */ |
| pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| pNeighborRoamInfo->FTRoamInfo.neighborRptPending = false; |
| pNeighborRoamInfo->FTRoamInfo.numPreAuthRetries = 0; |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| pNeighborRoamInfo->FTRoamInfo.preauthRspPending = 0; |
| cdf_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, |
| sizeof(tCsrNeighborReportBssInfo) * |
| MAX_BSS_IN_NEIGHBOR_RPT); |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| cdf_mem_zero(&pNeighborRoamInfo->handoffReqInfo, |
| sizeof(tCsrHandoffRequest)); |
| } |
| |
| void csr_neighbor_roam_reset_report_scan_state_control_info(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| cdf_zero_macaddr(&pNeighborRoamInfo->currAPbssid); |
| #ifdef FEATURE_WLAN_ESE |
| pNeighborRoamInfo->isESEAssoc = false; |
| pNeighborRoamInfo->isVOAdmitted = false; |
| pNeighborRoamInfo->MinQBssLoadRequired = 0; |
| #endif |
| |
| /* Purge roamable AP list */ |
| csr_neighbor_roam_free_roamable_bss_list(pMac, |
| &pNeighborRoamInfo->roamableAPList); |
| return; |
| } |
| |
| /** |
| * csr_neighbor_roam_reset_init_state_control_info() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @sessionId : session id |
| * |
| * This function will reset the neighbor roam control info data structures. |
| * This function should be invoked whenever we move to CONNECTED state from |
| * INIT state |
| * |
| * Return: None |
| */ |
| void csr_neighbor_roam_reset_init_state_control_info(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| csr_neighbor_roam_reset_connected_state_control_info(pMac, sessionId); |
| |
| /* In addition to the above resets, |
| we should clear off the curAPBssId/Session ID in the timers */ |
| csr_neighbor_roam_reset_report_scan_state_control_info(pMac, sessionId); |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_purge_preauth_fail_list |
| |
| \brief This function empties the preauth fail list |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csr_neighbor_roam_purge_preauth_fail_list(tpAniSirGlobal pMac) |
| { |
| uint8_t i; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = NULL; |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, FL("Purging the preauth fail list")); |
| for (i = 0; i < CSR_ROAM_SESSION_MAX; i++) { |
| pNeighborRoamInfo = &pMac->roam.neighborRoamInfo[i]; |
| while (pNeighborRoamInfo->FTRoamInfo.preAuthFailList. |
| numMACAddress) { |
| cdf_mem_zero(pNeighborRoamInfo->FTRoamInfo. |
| preAuthFailList. |
| macAddress[pNeighborRoamInfo->FTRoamInfo. |
| preAuthFailList.numMACAddress - |
| 1], sizeof(tSirMacAddr)); |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList. |
| numMACAddress--; |
| } |
| } |
| return; |
| } |
| |
| /** |
| * csr_neighbor_roam_add_preauth_fail() - add bssid to preauth failed list |
| * @mac_ctx: The handle returned by mac_open. |
| * @bssid: BSSID to be added to the preauth fail list |
| * |
| * This function adds the given BSSID to the Preauth fail list |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_add_preauth_fail(tpAniSirGlobal mac_ctx, |
| uint8_t session_id, |
| tSirMacAddr bssid) |
| { |
| uint8_t i = 0; |
| tpCsrNeighborRoamControlInfo neighbor_roam_info = |
| &mac_ctx->roam.neighborRoamInfo[session_id]; |
| uint8_t num_mac_addr = neighbor_roam_info->FTRoamInfo.preAuthFailList. |
| numMACAddress; |
| |
| NEIGHBOR_ROAM_DEBUG(mac_ctx, LOGE, |
| FL(" Added BSSID " MAC_ADDRESS_STR " to Preauth failed list"), |
| MAC_ADDR_ARRAY(bssid)); |
| |
| for (i = 0; |
| i < neighbor_roam_info->FTRoamInfo.preAuthFailList.numMACAddress; |
| i++) { |
| if (true == cdf_mem_compare( |
| neighbor_roam_info->FTRoamInfo.preAuthFailList.macAddress[i], |
| bssid, sizeof(tSirMacAddr))) { |
| sms_log(mac_ctx, LOGW, FL("BSSID "MAC_ADDRESS_STR" already present in preauth fail list"), |
| MAC_ADDR_ARRAY(bssid)); |
| return CDF_STATUS_SUCCESS; |
| } |
| } |
| |
| if ((num_mac_addr + 1) > MAX_NUM_PREAUTH_FAIL_LIST_ADDRESS) { |
| sms_log(mac_ctx, LOGE, |
| FL("Cannot add, preauth fail list is full.")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| cdf_mem_copy(neighbor_roam_info->FTRoamInfo.preAuthFailList. |
| macAddress[num_mac_addr], bssid, sizeof(tSirMacAddr)); |
| neighbor_roam_info->FTRoamInfo.preAuthFailList.numMACAddress++; |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * csr_neighbor_roam_is_preauth_candidate() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @bssId : BSSID of the candidate |
| * |
| * This function checks whether the given MAC address is already present |
| * in the preauth fail list and returns true/false accordingly |
| * |
| * Return: true if preauth candidate, false otherwise |
| */ |
| bool csr_neighbor_roam_is_preauth_candidate(tpAniSirGlobal pMac, |
| uint8_t sessionId, tSirMacAddr bssId) |
| { |
| uint8_t i = 0; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (csr_roam_is_roam_offload_scan_enabled(pMac)) { |
| return true; |
| } |
| if (0 == pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress) |
| return true; |
| |
| for (i = 0; |
| i < pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress; |
| i++) { |
| if (true == |
| cdf_mem_compare(pNeighborRoamInfo->FTRoamInfo. |
| preAuthFailList.macAddress[i], bssId, |
| sizeof(tSirMacAddr))) { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("BSSID " MAC_ADDRESS_STR |
| " already present in preauth fail list"), |
| MAC_ADDR_ARRAY(bssId)); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /** |
| * csr_neighbor_roam_issue_preauth_req() - Send preauth request to first AP |
| * @mac_ctx: The handle returned by mac_open. |
| * @session_id: Session information |
| * |
| * This function issues preauth request to PE with the 1st AP entry in the |
| * roamable AP list |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| static CDF_STATUS csr_neighbor_roam_issue_preauth_req(tpAniSirGlobal mac_ctx, |
| uint8_t session_id) |
| { |
| tpCsrNeighborRoamControlInfo neighbor_roam_info = |
| &mac_ctx->roam.neighborRoamInfo[session_id]; |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamBSSInfo neighbor_bss_node; |
| |
| |
| if (false != neighbor_roam_info->FTRoamInfo.preauthRspPending) { |
| /* This must not be true here */ |
| CDF_ASSERT(neighbor_roam_info->FTRoamInfo.preauthRspPending == |
| false); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| /* |
| * Issue Preauth request to PE here. |
| * Need to issue the preauth request with the BSSID that is in the |
| * head of the roamable AP list. Parameters that should be passed are |
| * BSSID, Channel number and the neighborScanPeriod(probably). If |
| * roamableAPList gets empty, should transition to REPORT_SCAN state |
| */ |
| neighbor_bss_node = csr_neighbor_roam_next_roamable_ap(mac_ctx, |
| &neighbor_roam_info->roamableAPList, NULL); |
| |
| if (NULL == neighbor_bss_node) { |
| sms_log(mac_ctx, LOGW, FL("Roamable AP list is empty.. ")); |
| return CDF_STATUS_E_FAILURE; |
| } else { |
| csr_neighbor_roam_send_lfr_metric_event(mac_ctx, session_id, |
| neighbor_bss_node->pBssDescription->bssId, |
| eCSR_ROAM_PREAUTH_INIT_NOTIFY); |
| status = csr_roam_enqueue_preauth(mac_ctx, session_id, |
| neighbor_bss_node->pBssDescription, |
| eCsrPerformPreauth, true); |
| |
| sms_log(mac_ctx, LOG1, |
| FL("Before Pre-Auth: BSSID " MAC_ADDRESS_STR ", Ch:%d"), |
| MAC_ADDR_ARRAY( |
| neighbor_bss_node->pBssDescription->bssId), |
| (int)neighbor_bss_node->pBssDescription->channelId); |
| |
| if (CDF_STATUS_SUCCESS != status) { |
| sms_log(mac_ctx, LOGE, |
| FL("Return failed preauth request status %d"), |
| status); |
| return status; |
| } |
| } |
| |
| neighbor_roam_info->FTRoamInfo.preauthRspPending = true; |
| |
| /* Increment the preauth retry count */ |
| neighbor_roam_info->FTRoamInfo.numPreAuthRetries++; |
| |
| /* Transition the state to preauthenticating */ |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (mac_ctx, eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING, |
| session_id) |
| |
| return status; |
| } |
| |
| /** |
| * csr_neighbor_roam_preauth_rsp_handler() - handle preauth response |
| * @mac_ctx: The handle returned by mac_open. |
| * @session_id: SME session |
| * @lim_status: eSIR_SUCCESS/eSIR_FAILURE/eSIR_LIM_MAX_STA_REACHED_ERROR/ |
| * eSIT_LIM_AUTH_RSP_TIMEOUT status from PE |
| * |
| * This function handle the Preauth response from PE |
| * Every preauth is allowed max 3 tries if it fails. If a bssid failed |
| * for more than MAX_TRIES, we will remove it from the list and try |
| * with the next node in the roamable AP list and add the BSSID to |
| * pre-auth failed list. If no more entries present in roamable AP list, |
| * transition to REPORT_SCAN state. |
| * |
| * Return: CDF_STATUS_SUCCESS on success (i.e. pre-auth processed), |
| * CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_preauth_rsp_handler(tpAniSirGlobal mac_ctx, |
| uint8_t session_id, |
| tSirRetStatus lim_status) |
| { |
| tpCsrNeighborRoamControlInfo neighbor_roam_info = |
| &mac_ctx->roam.neighborRoamInfo[session_id]; |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| CDF_STATUS preauth_processed = CDF_STATUS_SUCCESS; |
| tpCsrNeighborRoamBSSInfo preauth_rsp_node = NULL; |
| |
| if (false == neighbor_roam_info->FTRoamInfo.preauthRspPending) { |
| /* |
| * This can happen when we disconnect immediately |
| * after sending a pre-auth request. During processing |
| * of the disconnect command, we would have reset |
| * preauthRspPending and transitioned to INIT state. |
| */ |
| NEIGHBOR_ROAM_DEBUG(mac_ctx, LOGW, |
| FL("Unexpected pre-auth response in state %d"), |
| neighbor_roam_info->neighborRoamState); |
| preauth_processed = CDF_STATUS_E_FAILURE; |
| goto DEQ_PREAUTH; |
| } |
| /* We can receive it in these 2 states. */ |
| if ((neighbor_roam_info->neighborRoamState != |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING)) { |
| NEIGHBOR_ROAM_DEBUG(mac_ctx, LOGW, |
| FL("Preauth response received in state %s"), |
| mac_trace_get_neighbour_roam_state |
| (neighbor_roam_info->neighborRoamState)); |
| preauth_processed = CDF_STATUS_E_FAILURE; |
| goto DEQ_PREAUTH; |
| } |
| |
| neighbor_roam_info->FTRoamInfo.preauthRspPending = false; |
| |
| if (eSIR_SUCCESS == lim_status) |
| preauth_rsp_node = |
| csr_neighbor_roam_next_roamable_ap( |
| mac_ctx, |
| &neighbor_roam_info->roamableAPList, |
| NULL); |
| if ((eSIR_SUCCESS == lim_status) && (NULL != preauth_rsp_node)) { |
| NEIGHBOR_ROAM_DEBUG(mac_ctx, LOG1, |
| FL("Preauth completed successfully after %d tries"), |
| neighbor_roam_info->FTRoamInfo.numPreAuthRetries); |
| sms_log(mac_ctx, LOG1, |
| FL("After Pre-Auth: BSSID " MAC_ADDRESS_STR ", Ch:%d"), |
| MAC_ADDR_ARRAY( |
| preauth_rsp_node->pBssDescription->bssId), |
| (int)preauth_rsp_node->pBssDescription->channelId); |
| |
| csr_neighbor_roam_send_lfr_metric_event(mac_ctx, session_id, |
| preauth_rsp_node->pBssDescription->bssId, |
| eCSR_ROAM_PREAUTH_STATUS_SUCCESS); |
| /* |
| * Preauth completed successfully. Insert the preauthenticated |
| * node to tail of preAuthDoneList. |
| */ |
| csr_neighbor_roam_remove_roamable_ap_list_entry(mac_ctx, |
| &neighbor_roam_info->roamableAPList, |
| preauth_rsp_node); |
| csr_ll_insert_tail( |
| &neighbor_roam_info->FTRoamInfo.preAuthDoneList, |
| &preauth_rsp_node->List, LL_ACCESS_LOCK); |
| |
| /* Pre-auth successful. Transition to PREAUTH Done state */ |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (mac_ctx, eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE, |
| session_id) |
| neighbor_roam_info->FTRoamInfo.numPreAuthRetries = 0; |
| |
| /* |
| * The caller of this function would start a timer and by |
| * the time it expires, supplicant should have provided |
| * the updated FTIEs to SME. So, when it expires, handoff |
| * will be triggered then. |
| */ |
| } else { |
| tpCsrNeighborRoamBSSInfo neighbor_bss_node = NULL; |
| tListElem *entry; |
| bool is_dis_pending = false; |
| |
| sms_log(mac_ctx, LOGE, |
| FL("Preauth failed retry number %d, status = 0x%x"), |
| neighbor_roam_info->FTRoamInfo.numPreAuthRetries, |
| lim_status); |
| |
| /* |
| * Preauth failed. Add the bssId to the preAuth failed list |
| * of MAC Address. Also remove the AP from roamable AP list. |
| */ |
| if ((neighbor_roam_info->FTRoamInfo.numPreAuthRetries >= |
| CSR_NEIGHBOR_ROAM_MAX_NUM_PREAUTH_RETRIES) || |
| (eSIR_LIM_MAX_STA_REACHED_ERROR == lim_status)) { |
| /* |
| * We are going to remove the node as it fails for |
| * more than MAX tries. Reset this count to 0 |
| */ |
| neighbor_roam_info->FTRoamInfo.numPreAuthRetries = 0; |
| |
| /* |
| * The one in the head of the list should be one with |
| * which we issued pre-auth and failed |
| */ |
| entry = csr_ll_remove_head( |
| &neighbor_roam_info->roamableAPList, |
| LL_ACCESS_LOCK); |
| if (!entry) { |
| sms_log(mac_ctx, LOGE, |
| FL("Preauth list is empty")); |
| goto NEXT_PREAUTH; |
| } |
| neighbor_bss_node = GET_BASE_ADDR(entry, |
| tCsrNeighborRoamBSSInfo, |
| List); |
| /* |
| * Add the BSSID to pre-auth fail list if |
| * it is not requested by HDD |
| */ |
| if (!neighbor_roam_info->uOsRequestedHandoff) |
| status = |
| csr_neighbor_roam_add_preauth_fail( |
| mac_ctx, session_id, |
| neighbor_bss_node-> |
| pBssDescription->bssId); |
| csr_neighbor_roam_send_lfr_metric_event(mac_ctx, |
| session_id, |
| neighbor_bss_node->pBssDescription->bssId, |
| eCSR_ROAM_PREAUTH_STATUS_FAILURE); |
| /* Now we can free this node */ |
| csr_neighbor_roam_free_neighbor_roam_bss_node( |
| mac_ctx, neighbor_bss_node); |
| } |
| NEXT_PREAUTH: |
| is_dis_pending = is_disconnect_pending(mac_ctx, session_id); |
| if (is_dis_pending) { |
| sms_log(mac_ctx, LOGE, |
| FL("Disconnect in progress, Abort preauth")); |
| goto ABORT_PREAUTH; |
| } |
| /* Issue preauth request for the same/next entry */ |
| if (CDF_STATUS_SUCCESS == csr_neighbor_roam_issue_preauth_req( |
| mac_ctx, session_id)) |
| goto DEQ_PREAUTH; |
| ABORT_PREAUTH: |
| if (csr_roam_is_roam_offload_scan_enabled(mac_ctx)) { |
| if (neighbor_roam_info->uOsRequestedHandoff) { |
| neighbor_roam_info->uOsRequestedHandoff = 0; |
| csr_roam_offload_scan(mac_ctx, 0, |
| ROAM_SCAN_OFFLOAD_START, |
| REASON_PREAUTH_FAILED_FOR_ALL); |
| } else { |
| csr_roam_offload_scan(mac_ctx, 0, |
| ROAM_SCAN_OFFLOAD_RESTART, |
| REASON_PREAUTH_FAILED_FOR_ALL); |
| } |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (mac_ctx, eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, |
| session_id); |
| } |
| } |
| |
| DEQ_PREAUTH: |
| csr_dequeue_roam_command(mac_ctx, eCsrPerformPreauth); |
| return preauth_processed; |
| } |
| |
| #ifdef WLAN_FEATURE_ROAM_OFFLOAD |
| /** |
| * csr_neighbor_roam_offload_update_preauth_list() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * @roam_sync_ind_ptr: Roam offload sync Ind Info |
| * |
| * This function handles the RoamOffloadSynch and adds the |
| * roamed AP to the preauth done list |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS |
| csr_neighbor_roam_offload_update_preauth_list(tpAniSirGlobal pMac, |
| roam_offload_synch_ind *roam_sync_ind_ptr, uint8_t session_id) |
| { |
| tpCsrNeighborRoamControlInfo neighbor_roam_info_ptr = |
| &pMac->roam.neighborRoamInfo[session_id]; |
| tpCsrNeighborRoamBSSInfo bss_info_ptr; |
| uint16_t bss_desc_len; |
| |
| if (neighbor_roam_info_ptr->neighborRoamState != |
| eCSR_NEIGHBOR_ROAM_STATE_CONNECTED) { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| FL("LFR3:Roam Offload Synch Ind received in state %d"), |
| neighbor_roam_info_ptr->neighborRoamState); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| bss_info_ptr = cdf_mem_malloc(sizeof(tCsrNeighborRoamBSSInfo)); |
| if (NULL == bss_info_ptr) { |
| sms_log(pMac, LOGE, |
| FL("LFR3:Memory allocation for Neighbor Roam BSS Info failed")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| bss_desc_len = roam_sync_ind_ptr->bss_desc_ptr->length + |
| sizeof(roam_sync_ind_ptr->bss_desc_ptr->length); |
| bss_info_ptr->pBssDescription = cdf_mem_malloc(bss_desc_len); |
| if (bss_info_ptr->pBssDescription != NULL) { |
| cdf_mem_copy(bss_info_ptr->pBssDescription, |
| roam_sync_ind_ptr->bss_desc_ptr, |
| bss_desc_len); |
| } else { |
| sms_log(pMac, LOGE, |
| FL("LFR3:Mem alloc for Neighbor Roam BSS Descriptor failed")); |
| cdf_mem_free(bss_info_ptr); |
| return CDF_STATUS_E_NOMEM; |
| |
| } |
| csr_ll_insert_tail(&neighbor_roam_info_ptr->FTRoamInfo.preAuthDoneList, |
| &bss_info_ptr->List, LL_ACCESS_LOCK); |
| |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (pMac, eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE, session_id) |
| neighbor_roam_info_ptr->FTRoamInfo.numPreAuthRetries = 0; |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| "LFR3:Entry added to Auth Done List"); |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| #endif |
| /** |
| * csr_neighbor_roam_prepare_scan_profile_filter() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * @scan_filter: Populated scan filter based on the connected profile |
| * |
| * This function creates a scan filter based on the currently |
| * connected profile. Based on this filter, scan results are obtained |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS |
| csr_neighbor_roam_prepare_scan_profile_filter(tpAniSirGlobal pMac, |
| tCsrScanResultFilter *pScanFilter, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo nbr_roam_info = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrRoamConnectedProfile *pCurProfile = |
| &pMac->roam.roamSession[sessionId].connectedProfile; |
| uint8_t i = 0; |
| struct roam_ext_params *roam_params; |
| uint8_t num_ch = 0; |
| |
| CDF_ASSERT(pScanFilter != NULL); |
| if (pScanFilter == NULL) |
| return CDF_STATUS_E_FAILURE; |
| |
| cdf_mem_zero(pScanFilter, sizeof(tCsrScanResultFilter)); |
| roam_params = &pMac->roam.configParam.roam_params; |
| /* We dont want to set BSSID based Filter */ |
| pScanFilter->BSSIDs.numOfBSSIDs = 0; |
| pScanFilter->scan_filter_for_roam = 1; |
| /* only for HDD requested handoff fill in the BSSID in the filter */ |
| if (nbr_roam_info->uOsRequestedHandoff) { |
| pScanFilter->BSSIDs.numOfBSSIDs = 1; |
| pScanFilter->BSSIDs.bssid = |
| cdf_mem_malloc(sizeof(tSirMacAddr) * |
| pScanFilter->BSSIDs.numOfBSSIDs); |
| if (NULL == pScanFilter->BSSIDs.bssid) { |
| sms_log(pMac, LOGE, |
| FL("Scan Filter BSSID mem alloc failed")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| |
| cdf_mem_zero(pScanFilter->BSSIDs.bssid, |
| sizeof(tSirMacAddr) * |
| pScanFilter->BSSIDs.numOfBSSIDs); |
| |
| /* Populate the BSSID from handoff info received from HDD */ |
| for (i = 0; i < pScanFilter->BSSIDs.numOfBSSIDs; i++) { |
| cdf_copy_macaddr(&pScanFilter->BSSIDs.bssid[i], |
| &nbr_roam_info->handoffReqInfo.bssid); |
| } |
| } |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| FL("No of Allowed SSID List:%d"), |
| roam_params->num_ssid_allowed_list); |
| if (roam_params->num_ssid_allowed_list) { |
| pScanFilter->SSIDs.numOfSSIDs = |
| roam_params->num_ssid_allowed_list; |
| pScanFilter->SSIDs.SSIDList = |
| cdf_mem_malloc(sizeof(tCsrSSIDInfo) * |
| pScanFilter->SSIDs.numOfSSIDs); |
| if (NULL == pScanFilter->SSIDs.SSIDList) { |
| sms_log(pMac, LOGE, |
| FL("Scan Filter SSID mem alloc failed")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| for (i = 0; i < roam_params->num_ssid_allowed_list; i++) { |
| pScanFilter->SSIDs.SSIDList[i].handoffPermitted = 1; |
| pScanFilter->SSIDs.SSIDList[i].ssidHidden = 0; |
| cdf_mem_copy((void *) |
| pScanFilter->SSIDs.SSIDList[i].SSID.ssId, |
| roam_params->ssid_allowed_list[i].ssId, |
| roam_params->ssid_allowed_list[i].length); |
| pScanFilter->SSIDs.SSIDList[i].SSID.length = |
| roam_params->ssid_allowed_list[i].length; |
| } |
| } else { |
| /* Populate all the information from the connected profile */ |
| pScanFilter->SSIDs.numOfSSIDs = 1; |
| pScanFilter->SSIDs.SSIDList = |
| cdf_mem_malloc(sizeof(tCsrSSIDInfo)); |
| if (NULL == pScanFilter->SSIDs.SSIDList) { |
| sms_log(pMac, LOGE, |
| FL("Scan Filter SSID mem alloc failed")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| pScanFilter->SSIDs.SSIDList->handoffPermitted = 1; |
| pScanFilter->SSIDs.SSIDList->ssidHidden = 0; |
| pScanFilter->SSIDs.SSIDList->SSID.length = |
| pCurProfile->SSID.length; |
| cdf_mem_copy((void *)pScanFilter->SSIDs.SSIDList->SSID.ssId, |
| (void *)pCurProfile->SSID.ssId, |
| pCurProfile->SSID.length); |
| |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, |
| FL("Filtering for SSID %.*s,length of SSID = %u"), |
| pScanFilter->SSIDs.SSIDList->SSID.length, |
| pScanFilter->SSIDs.SSIDList->SSID.ssId, |
| pScanFilter->SSIDs.SSIDList->SSID.length); |
| } |
| pScanFilter->authType.numEntries = 1; |
| pScanFilter->authType.authType[0] = pCurProfile->AuthType; |
| |
| pScanFilter->EncryptionType.numEntries = 1; /* This must be 1 */ |
| pScanFilter->EncryptionType.encryptionType[0] = |
| pCurProfile->EncryptionType; |
| |
| pScanFilter->mcEncryptionType.numEntries = 1; |
| pScanFilter->mcEncryptionType.encryptionType[0] = |
| pCurProfile->mcEncryptionType; |
| |
| pScanFilter->BSSType = pCurProfile->BSSType; |
| |
| num_ch = |
| nbr_roam_info->roamChannelInfo.currentChannelListInfo.numOfChannels; |
| if (num_ch) { |
| /* |
| * We are intrested only in the scan results on channels we |
| * scanned |
| */ |
| pScanFilter->ChannelInfo.numOfChannels = num_ch; |
| pScanFilter->ChannelInfo.ChannelList = |
| cdf_mem_malloc(num_ch * sizeof(uint8_t)); |
| if (NULL == pScanFilter->ChannelInfo.ChannelList) { |
| sms_log(pMac, LOGE, |
| FL("Scan Filter Ch list mem alloc failed")); |
| cdf_mem_free(pScanFilter->SSIDs.SSIDList); |
| pScanFilter->SSIDs.SSIDList = NULL; |
| return CDF_STATUS_E_NOMEM; |
| } |
| for (i = 0; i < pScanFilter->ChannelInfo.numOfChannels; i++) { |
| pScanFilter->ChannelInfo.ChannelList[i] = |
| nbr_roam_info->roamChannelInfo.currentChannelListInfo. |
| ChannelList[i]; |
| } |
| } else { |
| pScanFilter->ChannelInfo.numOfChannels = 0; |
| pScanFilter->ChannelInfo.ChannelList = NULL; |
| } |
| |
| if (nbr_roam_info->is11rAssoc) { |
| /* |
| * MDIE should be added as a part of profile. This should be |
| * added as a part of filter as well |
| */ |
| pScanFilter->MDID.mdiePresent = pCurProfile->MDID.mdiePresent; |
| pScanFilter->MDID.mobilityDomain = |
| pCurProfile->MDID.mobilityDomain; |
| } |
| |
| #ifdef WLAN_FEATURE_11W |
| pScanFilter->MFPEnabled = pCurProfile->MFPEnabled; |
| pScanFilter->MFPRequired = pCurProfile->MFPRequired; |
| pScanFilter->MFPCapable = pCurProfile->MFPCapable; |
| #endif |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| uint32_t csr_get_current_ap_rssi(tpAniSirGlobal pMac, |
| tScanResultHandle *pScanResultList, |
| uint8_t sessionId) |
| { |
| tCsrScanResultInfo *pScanResult; |
| tpCsrNeighborRoamControlInfo nbr_roam_info = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| /* We are setting this as default value to make sure we return this value, |
| when we do not see this AP in the scan result for some reason.However,it is |
| less likely that we are associated to an AP and do not see it in the scan list */ |
| uint32_t CurrAPRssi = -125; |
| |
| while (NULL != |
| (pScanResult = csr_scan_result_get_next(pMac, *pScanResultList))) { |
| if (true == |
| cdf_mem_compare(pScanResult->BssDescriptor.bssId, |
| nbr_roam_info->currAPbssid.bytes, |
| sizeof(tSirMacAddr))) { |
| /* We got a match with the currently associated AP. |
| * Capture the RSSI value and complete the while loop. |
| * The while loop is completed in order to make the current entry go back to NULL, |
| * and in the next while loop, it properly starts searching from the head of the list. |
| * TODO: Can also try setting the current entry directly to NULL as soon as we find the new AP*/ |
| |
| CurrAPRssi = |
| (int)pScanResult->BssDescriptor.rssi * (-1); |
| |
| } else { |
| continue; |
| } |
| } |
| |
| return CurrAPRssi; |
| |
| } |
| |
| /** |
| * csr_neighbor_roam_process_scan_results() - build roaming candidate list |
| * |
| * @mac_ctx: The handle returned by mac_open. |
| * @sessionid: Session information |
| * @scan_results_list: List obtained from csr_scan_get_result() |
| * |
| * This function applies various candidate checks like LFR, 11r, preauth, ESE |
| * and builds a roamable AP list. It applies age limit only if no suitable |
| * recent candidates are found. |
| * |
| * Output list is built in mac_ctx->roam.neighborRoamInfo[sessionid]. |
| * |
| * Return: void |
| */ |
| |
| static void |
| csr_neighbor_roam_process_scan_results(tpAniSirGlobal mac_ctx, |
| uint8_t sessionid, |
| tScanResultHandle *scan_results_list) |
| { |
| tCsrScanResultInfo *scan_result; |
| tpCsrNeighborRoamControlInfo n_roam_info = |
| &mac_ctx->roam.neighborRoamInfo[sessionid]; |
| tpCsrNeighborRoamBSSInfo bss_info; |
| uint32_t cur_ap_rssi; |
| uint32_t age_ticks = 0; |
| uint32_t limit_ticks = |
| cdf_system_msecs_to_ticks(ROAM_AP_AGE_LIMIT_MS); |
| uint8_t num_candidates = 0; |
| uint8_t num_dropped = 0; |
| /* |
| * first iteration of scan list should consider |
| * age constraint for candidates |
| */ |
| bool age_constraint = true; |
| #ifdef FEATURE_WLAN_ESE |
| uint16_t qpresent; |
| uint16_t qavail; |
| bool voadmitted; |
| #endif |
| /* |
| * Find out the Current AP RSSI and keep it handy to check if |
| * it is better than the RSSI of the AP which we are |
| * going to roam.If so, we are going to continue with the |
| * current AP. |
| */ |
| cur_ap_rssi = csr_get_current_ap_rssi(mac_ctx, scan_results_list, |
| sessionid); |
| |
| /* |
| * Expecting the scan result already to be in the sorted order based on |
| * RSSI. Based on the previous state we need to check whether the list |
| * should be sorted again taking neighbor score into consideration. If |
| * previous state is CFG_CHAN_LIST_SCAN, there should not be a neighbor |
| * score associated with any of the BSS. If the previous state is |
| * REPORT_QUERY, then there will be neighbor score for each of the APs. |
| * For now, let us take top of the list provided as it is by CSR Scan |
| * result API. Hence it is assumed that neighbor score and rssi score |
| * are in the same order. This will be taken care later. |
| */ |
| |
| do { |
| while (true) { |
| tSirBssDescription *descr; |
| |
| scan_result = csr_scan_result_get_next( |
| mac_ctx, *scan_results_list); |
| if (NULL == scan_result) |
| break; |
| descr = &scan_result->BssDescriptor; |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| FL("Scan result: BSSID " MAC_ADDRESS_STR |
| " (Rssi %ld, Ch:%d)"), |
| MAC_ADDR_ARRAY(descr->bssId), |
| abs(descr->rssi), descr->channelId); |
| |
| if (true == cdf_mem_compare(descr->bssId, |
| n_roam_info->currAPbssid.bytes, |
| sizeof(tSirMacAddr))) { |
| /* |
| * currently associated AP. Do not have this |
| * in the roamable AP list |
| */ |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "SKIP-currently associated AP"); |
| continue; |
| } |
| /* |
| * In case of reassoc requested by upper layer, look |
| * for exact match of bssid & channel. csr cache might |
| * have duplicates |
| */ |
| if ((n_roam_info->uOsRequestedHandoff) && |
| ((false == cdf_mem_compare(descr->bssId, |
| n_roam_info->handoffReqInfo.bssid.bytes, |
| sizeof(tSirMacAddr))) |
| || (descr->channelId != |
| n_roam_info->handoffReqInfo.channel))) { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "SKIP-not a candidate AP for OS requested roam"); |
| continue; |
| } |
| |
| if ((n_roam_info->is11rAssoc) && |
| (!csr_neighbor_roam_is_preauth_candidate(mac_ctx, |
| sessionid, descr->bssId))) { |
| sms_log(mac_ctx, LOGE, |
| FL("BSSID present in pre-auth fail list.. Ignoring")); |
| continue; |
| } |
| |
| #ifdef FEATURE_WLAN_ESE |
| if (!csr_roam_is_roam_offload_scan_enabled(mac_ctx) && |
| (n_roam_info->isESEAssoc) && |
| !csr_neighbor_roam_is_preauth_candidate(mac_ctx, |
| sessionid, descr->bssId)) { |
| sms_log(mac_ctx, LOGE, |
| FL("BSSID present in pre-auth fail list.. Ignoring")); |
| continue; |
| } |
| |
| qpresent = descr->QBSSLoad_present; |
| qavail = descr->QBSSLoad_avail; |
| voadmitted = n_roam_info->isVOAdmitted; |
| if (voadmitted) |
| sms_log(mac_ctx, LOG1, |
| FL("New AP QBSS present = %s, BW available = 0x%x, required = 0x%x"), |
| ((qpresent) ? "yes" : "no"), qavail, |
| n_roam_info->MinQBssLoadRequired); |
| if (voadmitted && qpresent && |
| (qavail < n_roam_info->MinQBssLoadRequired)) { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "BSSID : " MAC_ADDRESS_STR " has no bandwidth, ignoring", |
| MAC_ADDR_ARRAY(descr->bssId)); |
| continue; |
| } |
| if (voadmitted && !qpresent) { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "BSSID : " MAC_ADDRESS_STR " has no QBSS LOAD IE, ignoring", |
| MAC_ADDR_ARRAY(descr->bssId)); |
| continue; |
| } |
| #endif /* FEATURE_WLAN_ESE */ |
| |
| /* |
| * If we are supporting legacy roaming, and |
| * if the candidate is on the "pre-auth failed" list, |
| * ignore it. |
| */ |
| if (csr_roam_is_fast_roam_enabled(mac_ctx, sessionid) && |
| !csr_neighbor_roam_is_preauth_candidate(mac_ctx, |
| sessionid, descr->bssId)) { |
| sms_log(mac_ctx, LOGE, |
| FL("BSSID present in pre-auth fail list.. Ignoring")); |
| continue; |
| } |
| |
| /* check the age of the AP */ |
| age_ticks = (uint32_t) cdf_mc_timer_get_system_ticks() - |
| descr->nReceivedTime; |
| if (age_constraint == true && age_ticks > limit_ticks) { |
| num_dropped++; |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_WARN, |
| FL("Old AP (probe rsp/beacon) skipped.") |
| ); |
| continue; |
| } |
| |
| /* Finished all checks, now add it to candidate list */ |
| bss_info = |
| cdf_mem_malloc(sizeof(tCsrNeighborRoamBSSInfo)); |
| if (NULL == bss_info) { |
| sms_log(mac_ctx, LOGE, |
| FL("Memory allocation failed. Ignored candidate.")); |
| continue; |
| } |
| bss_info->pBssDescription = |
| cdf_mem_malloc(descr->length + |
| sizeof(descr->length)); |
| if (bss_info->pBssDescription != NULL) { |
| cdf_mem_copy(bss_info->pBssDescription, descr, |
| descr->length + sizeof(descr->length)); |
| } else { |
| sms_log(mac_ctx, LOGE, |
| FL("Memory allocation failed. Ignored candidate.")); |
| cdf_mem_free(bss_info); |
| continue; |
| } |
| /* |
| * Assign some preference value for now. Need to |
| * calculate theactual score based on RSSI and neighbor |
| * AP score |
| */ |
| bss_info->apPreferenceVal = 10; |
| num_candidates++; |
| csr_ll_insert_tail(&n_roam_info->roamableAPList, |
| &bss_info->List, LL_ACCESS_LOCK); |
| } /* end of while (csr_scan_result_get_next) */ |
| |
| /* if some candidates were found, then no need to repeat */ |
| if (num_candidates) |
| break; |
| /* |
| * if age_constraint is already false, we have done two |
| * iterations and no candidate were found |
| */ |
| if (age_constraint == false) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| "%s: No roam able candidates found", |
| __func__); |
| break; |
| } |
| /* |
| * if all candidates were dropped rescan the scan |
| * list but this time without age constraint. |
| */ |
| age_constraint = false; |
| /* if no candidates were dropped no need to repeat */ |
| } while (num_dropped); |
| |
| /* |
| * Now we have all the scan results in our local list. Good time to free |
| * up the the list we got as a part of csrGetScanResult |
| */ |
| csr_scan_result_purge(mac_ctx, *scan_results_list); |
| } |
| |
| static CDF_STATUS csr_neighbor_roam_process_scan_complete(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrScanResultFilter scanFilter; |
| tScanResultHandle scanResult; |
| uint32_t tempVal = 0; |
| CDF_STATUS hstatus; |
| |
| hstatus = csr_neighbor_roam_prepare_scan_profile_filter(pMac, |
| &scanFilter, |
| sessionId); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, |
| FL |
| ("11R/ESE/Other Association: Prepare scan to find neighbor AP filter status = %d"), |
| hstatus); |
| if (CDF_STATUS_SUCCESS != hstatus) { |
| sms_log(pMac, LOGE, |
| FL |
| ("Scan Filter preparation failed for Assoc type %d.. Bailing out.."), |
| tempVal); |
| return CDF_STATUS_E_FAILURE; |
| } |
| hstatus = csr_scan_get_result(pMac, &scanFilter, &scanResult); |
| if (hstatus != CDF_STATUS_SUCCESS) { |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGE, |
| FL("Get Scan Result status code %d"), |
| hstatus); |
| } |
| /* Process the scan results and update roamable AP list */ |
| csr_neighbor_roam_process_scan_results(pMac, sessionId, &scanResult); |
| |
| /* Free the scan filter */ |
| csr_free_scan_filter(pMac, &scanFilter); |
| |
| tempVal = csr_ll_count(&pNeighborRoamInfo->roamableAPList); |
| |
| if (tempVal) { |
| csr_neighbor_roam_trigger_handoff(pMac, sessionId); |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| if (csr_roam_is_roam_offload_scan_enabled(pMac)) { |
| if (pNeighborRoamInfo->uOsRequestedHandoff) { |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_START, |
| REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW); |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| } else { |
| /* There is no candidate or We are not roaming Now. |
| * Inform the FW to restart Roam Offload Scan */ |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_RESTART, |
| REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW); |
| } |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (pMac, eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, sessionId); |
| } |
| return CDF_STATUS_SUCCESS; |
| |
| } |
| |
| |
| #if defined WLAN_FEATURE_VOWIFI |
| /** |
| * csr_neighbor_roam_channels_filter_by_current_band() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * @input_ch_list: The input channel list |
| * @input_num_of_ch: The number of channels in input channel list |
| * @output_ch_list: The output channel list |
| * @output_num_of_ch: The number of channels in output channel list |
| * @merged_output_num_of_ch: The final number of channels in the |
| * output channel list. |
| * |
| * This function is used to filter out the channels based on the |
| * currently associated AP channel |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_channels_filter_by_current_band(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| uint8_t * |
| pInputChannelList, |
| uint8_t |
| inputNumOfChannels, |
| uint8_t * |
| pOutputChannelList, |
| uint8_t * |
| pMergedOutputNumOfChannels) |
| { |
| uint8_t i = 0; |
| uint8_t numChannels = 0; |
| uint8_t currAPoperationChannel = |
| pMac->roam.neighborRoamInfo[sessionId].currAPoperationChannel; |
| /* Check for NULL pointer */ |
| if (!pInputChannelList) |
| return CDF_STATUS_E_INVAL; |
| |
| /* Check for NULL pointer */ |
| if (!pOutputChannelList) |
| return CDF_STATUS_E_INVAL; |
| |
| if (inputNumOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| "%s: Wrong Number of Input Channels %d", |
| __func__, inputNumOfChannels); |
| return CDF_STATUS_E_INVAL; |
| } |
| for (i = 0; i < inputNumOfChannels; i++) { |
| if (get_rf_band(currAPoperationChannel) == |
| get_rf_band(pInputChannelList[i])) { |
| pOutputChannelList[numChannels] = pInputChannelList[i]; |
| numChannels++; |
| } |
| } |
| |
| /* Return final number of channels */ |
| *pMergedOutputNumOfChannels = numChannels; |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * csr_neighbor_roam_channels_filter_by_current_band() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * @input_ch_list: The additional channels to merge in to the |
| * "merged" channels list. |
| * @input_num_of_ch: The number of additional channels. |
| * @output_ch_list: The place to put the "merged" channel list. |
| * @output_num_of_ch: The original number of channels in the |
| * "merged" channels list. |
| * @merged_output_num_of_ch: The final number of channels in the |
| * "merged" channel list. |
| * |
| * This function is used to merge two channel list. |
| * NB: If called with outputNumOfChannels == 0, this routines simply |
| * copies the input channel list to the output channel list. if number |
| * of merged channels are more than 100, num of channels set to 100 |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_merge_channel_lists(tpAniSirGlobal pMac, |
| uint8_t *pInputChannelList, |
| uint8_t inputNumOfChannels, |
| uint8_t *pOutputChannelList, |
| uint8_t outputNumOfChannels, |
| uint8_t * |
| pMergedOutputNumOfChannels) |
| { |
| uint8_t i = 0; |
| uint8_t j = 0; |
| uint8_t numChannels = outputNumOfChannels; |
| |
| /* Check for NULL pointer */ |
| if (!pInputChannelList) |
| return CDF_STATUS_E_INVAL; |
| |
| /* Check for NULL pointer */ |
| if (!pOutputChannelList) |
| return CDF_STATUS_E_INVAL; |
| |
| if (inputNumOfChannels > WNI_CFG_VALID_CHANNEL_LIST_LEN) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| "%s: Wrong Number of Input Channels %d", |
| __func__, inputNumOfChannels); |
| return CDF_STATUS_E_INVAL; |
| } |
| if (outputNumOfChannels >= WNI_CFG_VALID_CHANNEL_LIST_LEN) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| "%s: Wrong Number of Output Channels %d", |
| __func__, outputNumOfChannels); |
| return CDF_STATUS_E_INVAL; |
| } |
| /* Add the "new" channels in the input list to the end of the output list. */ |
| for (i = 0; i < inputNumOfChannels; i++) { |
| for (j = 0; j < outputNumOfChannels; j++) { |
| if (pInputChannelList[i] == pOutputChannelList[j]) |
| break; |
| } |
| if (j == outputNumOfChannels) { |
| if (pInputChannelList[i]) { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "%s: [INFOLOG] Adding extra %d to Neighbor channel list", |
| __func__, pInputChannelList[i]); |
| pOutputChannelList[numChannels] = |
| pInputChannelList[i]; |
| numChannels++; |
| } |
| } |
| if (numChannels >= WNI_CFG_VALID_CHANNEL_LIST_LEN) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_INFO, |
| "%s: Merge Neighbor channel list reached Max " |
| "limit %d", __func__, numChannels); |
| break; |
| } |
| } |
| |
| /* Return final number of channels */ |
| *pMergedOutputNumOfChannels = numChannels; |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * csr_neighbor_roam_create_chan_list_from_neighbor_report() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * |
| * This function is invoked when neighbor report is received for the |
| * neighbor request. Based on the channels present in the neighbor report, |
| * it generates channel list which will be used in REPORT_SCAN state to |
| * scan for these neighbor APs |
| * |
| * Return: CDF_STATUS_SUCCESS on success, CDF_STATUS_E_FAILURE otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_create_chan_list_from_neighbor_report(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpRrmNeighborReportDesc pNeighborBssDesc; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| uint8_t numChannels = 0; |
| uint8_t i = 0; |
| uint8_t channelList[MAX_BSS_IN_NEIGHBOR_RPT]; |
| uint8_t mergedOutputNumOfChannels = 0; |
| |
| /* This should always start from 0 whenever we create a channel list out of neighbor AP list */ |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| |
| pNeighborBssDesc = sme_rrm_get_first_bss_entry_from_neighbor_cache(pMac); |
| |
| while (pNeighborBssDesc) { |
| if (pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport >= |
| MAX_BSS_IN_NEIGHBOR_RPT) |
| break; |
| |
| /* Update the neighbor BSS Info in the 11r FT Roam Info */ |
| pNeighborRoamInfo->FTRoamInfo. |
| neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo. |
| numBssFromNeighborReport].channelNum = |
| pNeighborBssDesc->pNeighborBssDescription->channel; |
| pNeighborRoamInfo->FTRoamInfo. |
| neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo. |
| numBssFromNeighborReport]. |
| neighborScore = (uint8_t) pNeighborBssDesc->roamScore; |
| cdf_mem_copy(pNeighborRoamInfo->FTRoamInfo. |
| neighboReportBssInfo[pNeighborRoamInfo->FTRoamInfo. |
| numBssFromNeighborReport]. |
| neighborBssId, |
| pNeighborBssDesc->pNeighborBssDescription->bssId, |
| sizeof(tSirMacAddr)); |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport++; |
| |
| /* Saving the channel list non-redundantly */ |
| for (i = 0; (i < numChannels && i < MAX_BSS_IN_NEIGHBOR_RPT); |
| i++) { |
| if (pNeighborBssDesc->pNeighborBssDescription-> |
| channel == channelList[i]) |
| break; |
| } |
| |
| if (i == numChannels) { |
| if (pNeighborBssDesc->pNeighborBssDescription->channel) { |
| if (CSR_IS_ROAM_INTRA_BAND_ENABLED(pMac)) { |
| /* Make sure to add only if its the same band */ |
| if (get_rf_band |
| (pNeighborRoamInfo-> |
| currAPoperationChannel) == |
| get_rf_band(pNeighborBssDesc-> |
| pNeighborBssDescription-> |
| channel)) { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "%s: [INFOLOG] Adding %d to Neighbor channel list (Same band)\n", |
| __func__, |
| pNeighborBssDesc-> |
| pNeighborBssDescription-> |
| channel); |
| channelList[numChannels] = |
| pNeighborBssDesc-> |
| pNeighborBssDescription-> |
| channel; |
| numChannels++; |
| } |
| } else { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_INFO, |
| "%s: [INFOLOG] Adding %d to Neighbor channel list\n", |
| __func__, |
| pNeighborBssDesc-> |
| pNeighborBssDescription-> |
| channel); |
| channelList[numChannels] = |
| pNeighborBssDesc-> |
| pNeighborBssDescription->channel; |
| numChannels++; |
| } |
| } |
| } |
| |
| pNeighborBssDesc = |
| sme_rrm_get_next_bss_entry_from_neighbor_cache(pMac, |
| pNeighborBssDesc); |
| } |
| |
| if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| ChannelList) { |
| cdf_mem_free(pNeighborRoamInfo->roamChannelInfo. |
| currentChannelListInfo.ChannelList); |
| } |
| |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = |
| NULL; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| numOfChannels = 0; |
| /* Store the obtained channel list to the Neighbor Control data structure */ |
| if (numChannels) |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| ChannelList = |
| cdf_mem_malloc((numChannels) * sizeof(uint8_t)); |
| if (NULL == |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| ChannelList) { |
| sms_log(pMac, LOGE, |
| FL |
| ("Memory allocation for Channel list failed.. TL event ignored")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| |
| cdf_mem_copy(pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| ChannelList, channelList, (numChannels) * sizeof(uint8_t)); |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| numOfChannels = numChannels; |
| /* |
| * Create a Union of occupied channel list learnt by the DUT along with the Neighbor |
| * report Channels. This increases the chances of the DUT to get a candidate AP while |
| * roaming even if the Neighbor Report is not able to provide sufficient information. |
| * */ |
| if (pMac->scan.occupiedChannels[sessionId].numChannels) { |
| csr_neighbor_roam_merge_channel_lists(pMac, |
| &pMac->scan. |
| occupiedChannels[sessionId]. |
| channelList[0], |
| pMac->scan. |
| occupiedChannels[sessionId]. |
| numChannels, |
| &pNeighborRoamInfo-> |
| roamChannelInfo. |
| currentChannelListInfo. |
| ChannelList[0], |
| pNeighborRoamInfo-> |
| roamChannelInfo. |
| currentChannelListInfo. |
| numOfChannels, |
| &mergedOutputNumOfChannels); |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| numOfChannels = mergedOutputNumOfChannels; |
| |
| } |
| /*Indicate the firmware about the update only if any new channels are added. |
| * Otherwise, the firmware would already be knowing the non-IAPPneighborlist |
| * channels. There is no need to update.*/ |
| if (numChannels) { |
| sms_log(pMac, LOG1, |
| FL("IAPP Neighbor list callback received as expected" |
| "in state %s."), |
| mac_trace_get_neighbour_roam_state(pNeighborRoamInfo-> |
| neighborRoamState)); |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = |
| true; |
| if (csr_roam_is_roam_offload_scan_enabled(pMac)) { |
| csr_roam_offload_scan(pMac, sessionId, |
| ROAM_SCAN_OFFLOAD_UPDATE_CFG, |
| REASON_CHANNEL_LIST_CHANGED); |
| } |
| } |
| pNeighborRoamInfo->roamChannelInfo.currentChanIndex = 0; |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| #endif /* WLAN_FEATURE_VOWIFI */ |
| |
| /** |
| * csr_neighbor_roam_is_ssid_and_security_match() - to match ssid/security |
| * @pMac: Pointer to mac context |
| * @pCurProfile: pointer to current roam profile |
| * @pBssDesc: pointer to bss description |
| * @pIes: pointer to local ies |
| * |
| * This routine will be called to see if SSID and security parameters |
| * are matching. |
| * |
| * Return: bool |
| */ |
| bool csr_neighbor_roam_is_ssid_and_security_match(tpAniSirGlobal pMac, |
| tCsrRoamConnectedProfile *pCurProfile, |
| tSirBssDescription *pBssDesc, tDot11fBeaconIEs *pIes) |
| { |
| tCsrAuthList authType; |
| tCsrEncryptionList uCEncryptionType; |
| tCsrEncryptionList mCEncryptionType; |
| bool fMatch = false; |
| |
| authType.numEntries = 1; |
| authType.authType[0] = pCurProfile->AuthType; |
| uCEncryptionType.numEntries = 1; |
| uCEncryptionType.encryptionType[0] = pCurProfile->EncryptionType; |
| mCEncryptionType.numEntries = 1; |
| mCEncryptionType.encryptionType[0] = pCurProfile->mcEncryptionType; |
| |
| /* Again, treat missing pIes as a non-match. */ |
| if (!pIes) |
| return false; |
| |
| /* Treat a missing SSID as a non-match. */ |
| if (!pIes->SSID.present) |
| return false; |
| |
| fMatch = csr_is_ssid_match(pMac, |
| (void *)pCurProfile->SSID.ssId, |
| pCurProfile->SSID.length, |
| pIes->SSID.ssid, |
| pIes->SSID.num_ssid, true); |
| if (true == fMatch) { |
| #ifdef WLAN_FEATURE_11W |
| /* |
| * We are sending current connected APs profile setting |
| * if other AP doesn't have the same PMF setting as currently |
| * connected AP then we will have some issues in roaming. |
| * |
| * Make sure all the APs have same PMF settings to avoid |
| * any corner cases. |
| */ |
| fMatch = csr_is_security_match(pMac, &authType, |
| &uCEncryptionType, &mCEncryptionType, |
| &pCurProfile->MFPEnabled, |
| &pCurProfile->MFPRequired, |
| &pCurProfile->MFPCapable, |
| pBssDesc, pIes, NULL, NULL, NULL); |
| #else |
| fMatch = csr_is_security_match(pMac, &authType, |
| &uCEncryptionType, |
| &mCEncryptionType, NULL, |
| NULL, NULL, pBssDesc, |
| pIes, NULL, NULL, NULL); |
| #endif |
| return fMatch; |
| } else { |
| return fMatch; |
| } |
| |
| } |
| |
| bool csr_neighbor_roam_is_new_connected_profile(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrRoamConnectedProfile *pCurrProfile = NULL; |
| tCsrRoamConnectedProfile *pPrevProfile = NULL; |
| tDot11fBeaconIEs *pIes = NULL; |
| tSirBssDescription *pBssDesc = NULL; |
| bool fNew = true; |
| |
| if (!(pMac->roam.roamSession && CSR_IS_SESSION_VALID(pMac, sessionId))) { |
| return fNew; |
| } |
| |
| pCurrProfile = &pMac->roam.roamSession[sessionId].connectedProfile; |
| if (!pCurrProfile) { |
| return fNew; |
| } |
| |
| pPrevProfile = &pNeighborRoamInfo->prevConnProfile; |
| if (!pPrevProfile) { |
| return fNew; |
| } |
| |
| pBssDesc = pPrevProfile->pBssDesc; |
| if (pBssDesc) { |
| if (CDF_IS_STATUS_SUCCESS( |
| csr_get_parsed_bss_description_ies(pMac, pBssDesc, &pIes)) |
| && csr_neighbor_roam_is_ssid_and_security_match(pMac, |
| pCurrProfile, pBssDesc, pIes)) { |
| fNew = false; |
| } |
| if (pIes) { |
| cdf_mem_free(pIes); |
| } |
| } |
| |
| if (fNew) { |
| sms_log(pMac, LOG1, |
| FL("Prev roam profile did not match current")); |
| } else { |
| sms_log(pMac, LOG1, FL("Prev roam profile matches current")); |
| } |
| |
| return fNew; |
| } |
| |
| bool csr_neighbor_roam_connected_profile_match(tpAniSirGlobal pMac, |
| uint8_t sessionId, |
| tCsrScanResult *pResult, |
| tDot11fBeaconIEs *pIes) |
| { |
| tCsrRoamConnectedProfile *pCurProfile = NULL; |
| tSirBssDescription *pBssDesc = &pResult->Result.BssDescriptor; |
| |
| if (!(pMac->roam.roamSession && CSR_IS_SESSION_VALID(pMac, sessionId))) { |
| return false; |
| } |
| |
| pCurProfile = &pMac->roam.roamSession[sessionId].connectedProfile; |
| |
| if (!pCurProfile) { |
| return false; |
| } |
| |
| return csr_neighbor_roam_is_ssid_and_security_match(pMac, pCurProfile, |
| pBssDesc, pIes); |
| } |
| |
| /** |
| * csr_neighbor_roam_prepare_non_occupied_channel_list() - prepare non-occup CL |
| * @pMac: The handle returned by mac_open |
| * @pInputChannelList: The default channels list |
| * @numOfChannels: The number of channels in the default channels list |
| * @pOutputChannelList: The place to put the non-occupied channel list |
| * @pOutputNumOfChannels: Number of channels in the non-occupied channel list |
| * |
| * This function is used to prepare a channel list that is derived from |
| * the list of valid channels and does not include those in the occupied list |
| * |
| * Return CDF_STATUS |
| */ |
| CDF_STATUS |
| csr_neighbor_roam_prepare_non_occupied_channel_list(tpAniSirGlobal pMac, |
| uint8_t sessionId, uint8_t *pInputChannelList, |
| uint8_t numOfChannels, uint8_t *pOutputChannelList, |
| uint8_t *pOutputNumOfChannels) |
| { |
| uint8_t i = 0; |
| uint8_t outputNumOfChannels = 0; |
| uint8_t numOccupiedChannels = |
| pMac->scan.occupiedChannels[sessionId].numChannels; |
| uint8_t *pOccupiedChannelList = |
| pMac->scan.occupiedChannels[sessionId].channelList; |
| |
| for (i = 0; i < numOfChannels; i++) { |
| if (csr_is_channel_present_in_list |
| (pOccupiedChannelList, numOccupiedChannels, |
| pInputChannelList[i])) |
| continue; |
| /* |
| * DFS channel will be added in the list only when the |
| * DFS Roaming scan flag is enabled |
| */ |
| if (CDS_IS_DFS_CH(pInputChannelList[i])) { |
| if (CSR_ROAMING_DFS_CHANNEL_DISABLED != |
| pMac->roam.configParam.allowDFSChannelRoam) { |
| pOutputChannelList[outputNumOfChannels++] = |
| pInputChannelList[i]; |
| } |
| } else { |
| pOutputChannelList[outputNumOfChannels++] = |
| pInputChannelList[i]; |
| } |
| } |
| |
| sms_log(pMac, LOG2, |
| FL("Number of channels in the valid channel list=%d; " |
| "Number of channels in the non-occupied list list=%d"), |
| numOfChannels, outputNumOfChannels); |
| |
| /* Return the number of channels */ |
| *pOutputNumOfChannels = outputNumOfChannels; |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * csr_roam_reset_roam_params - API to reset the roaming parameters |
| * @mac_ctx: Pointer to the global MAC structure |
| * |
| * The BSSID blacklist should not be cleared since it has to |
| * be used across connections. These parameters will be cleared |
| * and sent to firmware with with the roaming STOP command. |
| * |
| * Return: VOID |
| */ |
| void csr_roam_reset_roam_params(tpAniSirGlobal mac_ctx) |
| { |
| struct roam_ext_params *roam_params = NULL; |
| |
| /* |
| * clear all the whitelist parameters and remaining |
| * needs to be retained across connections. |
| */ |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| FL("Roaming parameters are reset")); |
| roam_params = &mac_ctx->roam.configParam.roam_params; |
| roam_params->num_ssid_allowed_list = 0; |
| cdf_mem_set(&roam_params->ssid_allowed_list, 0, |
| sizeof(tSirMacSSid) * MAX_SSID_ALLOWED_LIST); |
| } |
| |
| /** |
| * csr_neighbor_roam_indicate_disconnect() - To indicate disconnect |
| * @pMac: The handle returned by mac_open |
| * @sessionId: CSR session id that got disconnected |
| * |
| * This function is called by CSR as soon as the station disconnects |
| * from the AP. This function does the necessary cleanup of neighbor roam |
| * data structures. Neighbor roam state transitions to INIT state whenever |
| * this function is called except if the current state is REASSOCIATING |
| * |
| * Return: CDF_STATUS |
| */ |
| CDF_STATUS csr_neighbor_roam_indicate_disconnect(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrRoamConnectedProfile *pPrevProfile = |
| &pNeighborRoamInfo->prevConnProfile; |
| tCsrRoamSession *pSession = CSR_GET_SESSION(pMac, sessionId); |
| tCsrRoamSession *roam_session = NULL; |
| |
| if (NULL == pSession) { |
| sms_log(pMac, LOGE, FL("pSession is NULL")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_INFO, |
| FL("Disconn ind on session %d in state %d from bss :" |
| MAC_ADDRESS_STR), sessionId, |
| pNeighborRoamInfo->neighborRoamState, |
| MAC_ADDR_ARRAY(pSession->connectedProfile.bssid.bytes)); |
| /* |
| * Free the current previous profile and move |
| * the current profile to prev profile. |
| */ |
| csr_roam_free_connect_profile(pPrevProfile); |
| csr_roam_copy_connect_profile(pMac, sessionId, pPrevProfile); |
| /* |
| * clear the roaming parameters that are per connection. |
| * For a new connection, they have to be programmed again. |
| */ |
| if (!csr_neighbor_middle_of_roaming((tHalHandle)pMac, sessionId)) |
| csr_roam_reset_roam_params(pMac); |
| if (NULL != pSession) { |
| roam_session = &pMac->roam.roamSession[sessionId]; |
| if (NULL != pSession->pCurRoamProfile && (CDF_STA_MODE != |
| roam_session->pCurRoamProfile->csrPersona)) { |
| sms_log(pMac, LOGE, |
| FL("Ignore disconn ind rcvd from nonSTA persona" |
| "sessionId: %d, csrPersonna %d"), |
| sessionId, |
| (int)roam_session->pCurRoamProfile->csrPersona); |
| return CDF_STATUS_SUCCESS; |
| } |
| #ifdef FEATURE_WLAN_ESE |
| if (pSession->connectedProfile.isESEAssoc) { |
| cdf_mem_copy(&pSession->prevApSSID, |
| &pSession->connectedProfile.SSID, |
| sizeof(tSirMacSSid)); |
| cdf_copy_macaddr(&pSession->prevApBssid, |
| &pSession->connectedProfile.bssid); |
| pSession->prevOpChannel = |
| pSession->connectedProfile.operationChannel; |
| pSession->isPrevApInfoValid = true; |
| pSession->roamTS1 = cdf_mc_timer_get_system_time(); |
| } |
| #endif |
| } |
| |
| switch (pNeighborRoamInfo->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING: |
| /* |
| * Stop scan and neighbor refresh timers. |
| * These are indeed not required when we'r in reassoc state. |
| */ |
| if (!CSR_IS_ROAM_SUBSTATE_DISASSOC_HO(pMac, sessionId)) { |
| /* |
| * Disconnect indication during Disassoc Handoff |
| * sub-state is received when we are trying to |
| * disconnect with the old AP during roam. |
| * BUT, if receive a disconnect indication outside of |
| * Disassoc Handoff sub-state, then it means that |
| * this is a genuine disconnect and we need to clean up. |
| * Otherwise, we will be stuck in reassoc state which'll |
| * in-turn block scans. |
| */ |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, |
| sessionId); |
| pNeighborRoamInfo->roamChannelInfo. |
| IAPPNeighborListReceived = false; |
| } |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| csr_neighbor_roam_reset_init_state_control_info(pMac, |
| sessionId); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_CONNECTED: |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION( |
| pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, sessionId) |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = |
| false; |
| csr_neighbor_roam_reset_connected_state_control_info(pMac, |
| sessionId); |
| break; |
| |
| case eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE: |
| /* Stop pre-auth to reassoc interval timer */ |
| cdf_mc_timer_stop(&pSession->ftSmeContext. |
| preAuthReassocIntvlTimer); |
| case eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING: |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION( |
| pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, sessionId) |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = |
| false; |
| csr_neighbor_roam_reset_preauth_control_info(pMac, sessionId); |
| csr_neighbor_roam_reset_report_scan_state_control_info(pMac, |
| sessionId); |
| break; |
| default: |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Received disconnect event" |
| "in state %s "), |
| mac_trace_get_neighbour_roam_state( |
| pNeighborRoamInfo->neighborRoamState)); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOGW, FL("Transit to INIT state")); |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, sessionId) |
| pNeighborRoamInfo->roamChannelInfo. |
| IAPPNeighborListReceived = false; |
| break; |
| } |
| /*Inform the Firmware to STOP Scanning as the host has a disconnect. */ |
| if (csr_roam_is_sta_mode(pMac, sessionId)) { |
| csr_roam_offload_scan(pMac, sessionId, ROAM_SCAN_OFFLOAD_STOP, |
| REASON_DISCONNECTED); |
| } |
| |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /** |
| * csr_neighbor_roam_info_ctx_init() - Initialize neighbor roam struct |
| * @pMac: mac context |
| * @session_id: Session Id |
| * |
| * This initializes all the necessary data structures related to the |
| * associated AP. |
| * |
| * Return: CDF status |
| */ |
| static void csr_neighbor_roam_info_ctx_init( |
| tpAniSirGlobal pMac, |
| uint8_t session_id) |
| { |
| tpCsrNeighborRoamControlInfo ngbr_roam_info = |
| &pMac->roam.neighborRoamInfo[session_id]; |
| tCsrRoamSession *session = &pMac->roam.roamSession[session_id]; |
| |
| int init_ft_flag = false; |
| |
| /* |
| * Initialize the occupied list ONLY if we are |
| * transitioning from INIT state to CONNECTED state. |
| */ |
| if (eCSR_NEIGHBOR_ROAM_STATE_INIT == |
| ngbr_roam_info->neighborRoamState) |
| csr_init_occupied_channels_list(pMac, session_id); |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (pMac, eCSR_NEIGHBOR_ROAM_STATE_CONNECTED, session_id); |
| |
| cdf_copy_macaddr(&ngbr_roam_info->currAPbssid, |
| &session->connectedProfile.bssid); |
| ngbr_roam_info->currAPoperationChannel = |
| session->connectedProfile.operationChannel; |
| ngbr_roam_info->currentNeighborLookupThreshold = |
| ngbr_roam_info->cfgParams.neighborLookupThreshold; |
| ngbr_roam_info->currentOpportunisticThresholdDiff = |
| ngbr_roam_info->cfgParams.nOpportunisticThresholdDiff; |
| ngbr_roam_info->currentRoamRescanRssiDiff = |
| ngbr_roam_info->cfgParams.nRoamRescanRssiDiff; |
| ngbr_roam_info->currentRoamBmissFirstBcnt = |
| ngbr_roam_info->cfgParams.nRoamBmissFirstBcnt; |
| ngbr_roam_info->currentRoamBmissFinalBcnt = |
| ngbr_roam_info->cfgParams.nRoamBmissFinalBcnt; |
| ngbr_roam_info->currentRoamBeaconRssiWeight = |
| ngbr_roam_info->cfgParams.nRoamBeaconRssiWeight; |
| |
| /** |
| * Now we can clear the preauthDone that |
| * was saved as we are connected afresh */ |
| csr_neighbor_roam_free_roamable_bss_list(pMac, |
| &ngbr_roam_info->FTRoamInfo.preAuthDoneList); |
| |
| /* Based on the auth scheme tell if we are 11r */ |
| if (csr_is_auth_type11r |
| (session->connectedProfile.AuthType, |
| session->connectedProfile.MDID.mdiePresent)) { |
| if (pMac->roam.configParam.isFastTransitionEnabled) |
| init_ft_flag = true; |
| ngbr_roam_info->is11rAssoc = true; |
| } else |
| ngbr_roam_info->is11rAssoc = false; |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, FL("11rAssoc is = %d"), |
| ngbr_roam_info->is11rAssoc); |
| |
| #ifdef FEATURE_WLAN_ESE |
| /* Based on the auth scheme tell if we are 11r */ |
| if (session->connectedProfile.isESEAssoc) { |
| if (pMac->roam.configParam.isFastTransitionEnabled) |
| init_ft_flag = true; |
| ngbr_roam_info->isESEAssoc = true; |
| } else |
| ngbr_roam_info->isESEAssoc = false; |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG2, |
| FL("isESEAssoc is = %d ft = %d"), |
| ngbr_roam_info->isESEAssoc, init_ft_flag); |
| #endif |
| /* If "Legacy Fast Roaming" is enabled */ |
| if (csr_roam_is_fast_roam_enabled(pMac, session_id)) |
| init_ft_flag = true; |
| if (init_ft_flag == false) |
| return; |
| /* Initialize all the data structures needed for the 11r FT Preauth */ |
| ngbr_roam_info->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| csr_neighbor_roam_purge_preauth_failed_list(pMac); |
| if (!cds_is_multiple_active_sta_sessions() && |
| csr_roam_is_roam_offload_scan_enabled(pMac)) { |
| /* |
| * If this is not a INFRA type BSS, then do not send the command |
| * down to firmware.Do not send the START command for |
| * other session connections.*/ |
| if (!csr_roam_is_sta_mode(pMac, session_id)) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| "Wrong Mode %d", |
| session->connectedProfile.BSSType); |
| return; |
| } |
| ngbr_roam_info->uOsRequestedHandoff = 0; |
| #ifdef WLAN_FEATURE_ROAM_OFFLOAD |
| if (session->roam_synch_in_progress) { |
| if (pMac->roam.pReassocResp != NULL) { |
| CDF_TRACE(CDF_MODULE_ID_SME, |
| CDF_TRACE_LEVEL_DEBUG, |
| "Free Reassoc Rsp"); |
| cdf_mem_free(pMac->roam.pReassocResp); |
| pMac->roam.pReassocResp = NULL; |
| } |
| } else |
| #endif |
| csr_roam_offload_scan(pMac, session_id, |
| ROAM_SCAN_OFFLOAD_START, |
| REASON_CONNECT); |
| } |
| } |
| |
| /** |
| * csr_neighbor_roam_indicate_connect() |
| * @pMac: mac context |
| * @session_id: Session Id |
| * @cdf_status: CDF status |
| * |
| * This function is called by CSR as soon as the station connects to an AP. |
| * This initializes all the necessary data structures related to the |
| * associated AP and transitions the state to CONNECTED state |
| * |
| * Return: CDF status |
| */ |
| CDF_STATUS csr_neighbor_roam_indicate_connect( |
| tpAniSirGlobal pMac, uint8_t session_id, |
| CDF_STATUS cdf_status) |
| { |
| tpCsrNeighborRoamControlInfo ngbr_roam_info = |
| &pMac->roam.neighborRoamInfo[session_id]; |
| #ifdef WLAN_FEATURE_ROAM_OFFLOAD |
| tCsrRoamInfo roamInfo; |
| tCsrRoamSession *session = &pMac->roam.roamSession[session_id]; |
| tpSirSetActiveModeSetBncFilterReq msg; |
| #endif |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| |
| /* if session id invalid then we need return failure */ |
| if (NULL == ngbr_roam_info || !CSR_IS_SESSION_VALID(pMac, session_id) |
| || (NULL == pMac->roam.roamSession[session_id].pCurRoamProfile)) { |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| sms_log(pMac, LOG2, |
| FL("Connect ind. received with session id %d in state %s"), |
| session_id, mac_trace_get_neighbour_roam_state( |
| ngbr_roam_info->neighborRoamState)); |
| |
| /* Bail out if this is NOT a STA persona */ |
| if (pMac->roam.roamSession[session_id].pCurRoamProfile->csrPersona != |
| CDF_STA_MODE) { |
| sms_log(pMac, LOGE, |
| FL("Ignoring Connect ind received from a non STA." |
| "session_id: %d, csrPersonna %d"), session_id, |
| (int)session->pCurRoamProfile->csrPersona); |
| return CDF_STATUS_SUCCESS; |
| } |
| /* if a concurrent session is running */ |
| if ((false == |
| CSR_IS_FASTROAM_IN_CONCURRENCY_INI_FEATURE_ENABLED(pMac)) && |
| (csr_is_concurrent_session_running(pMac))) { |
| sms_log(pMac, LOGE, |
| FL("Ignoring Connect ind. received in multisession %d"), |
| csr_is_concurrent_session_running(pMac)); |
| return CDF_STATUS_SUCCESS; |
| } |
| #ifdef WLAN_FEATURE_ROAM_OFFLOAD |
| if (session->roam_synch_in_progress && |
| (eSIR_ROAM_AUTH_STATUS_AUTHENTICATED == |
| session->roam_synch_data->authStatus)) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| "LFR3:csr_neighbor_roam_indicate_connect"); |
| msg = cdf_mem_malloc(sizeof(tSirSetActiveModeSetBncFilterReq)); |
| if (msg == NULL) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| "LFR3:Mem Alloc failed for beacon Filter Req"); |
| return CDF_STATUS_E_NOMEM; |
| } |
| msg->messageType = eWNI_SME_SET_BCN_FILTER_REQ; |
| msg->length = sizeof(uint8_t); |
| msg->seesionId = session_id; |
| status = cds_send_mb_message_to_mac(msg); |
| cdf_copy_macaddr(&roamInfo.peerMac, |
| &session->connectedProfile.bssid); |
| roamInfo.roamSynchInProgress = |
| session->roam_synch_in_progress; |
| csr_roam_call_callback(pMac, session_id, &roamInfo, 0, |
| eCSR_ROAM_SET_KEY_COMPLETE, |
| eCSR_ROAM_RESULT_AUTHENTICATED); |
| csr_neighbor_roam_reset_init_state_control_info(pMac, |
| session_id); |
| csr_neighbor_roam_info_ctx_init(pMac, session_id); |
| |
| return status; |
| } |
| #endif |
| |
| switch (ngbr_roam_info->neighborRoamState) { |
| case eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING: |
| if (CDF_STATUS_SUCCESS != cdf_status) { |
| /** |
| * Just transition the state to INIT state.Rest of the |
| * clean up happens when we get next connect indication |
| */ |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION( |
| pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, |
| session_id) |
| ngbr_roam_info->roamChannelInfo.IAPPNeighborListReceived = |
| false; |
| break; |
| } |
| /* Fall through if the status is SUCCESS */ |
| case eCSR_NEIGHBOR_ROAM_STATE_INIT: |
| /* Reset all the data structures here */ |
| csr_neighbor_roam_reset_init_state_control_info(pMac, |
| session_id); |
| csr_neighbor_roam_info_ctx_init(pMac, session_id); |
| break; |
| default: |
| sms_log(pMac, LOGE, |
| FL("Connect evt received in invalid state %s Ignoring"), |
| mac_trace_get_neighbour_roam_state( |
| ngbr_roam_info->neighborRoamState)); |
| break; |
| } |
| return status; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_purge_preauth_failed_list |
| |
| \brief This function purges all the MAC addresses in the pre-auth fail list |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csr_neighbor_roam_purge_preauth_failed_list(tpAniSirGlobal pMac) |
| { |
| uint8_t i, j; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = NULL; |
| |
| for (j = 0; j < CSR_ROAM_SESSION_MAX; j++) { |
| pNeighborRoamInfo = &pMac->roam.neighborRoamInfo[j]; |
| for (i = 0; |
| i < |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList. |
| numMACAddress; i++) { |
| cdf_mem_zero(pNeighborRoamInfo->FTRoamInfo. |
| preAuthFailList.macAddress[i], |
| sizeof(tSirMacAddr)); |
| } |
| pNeighborRoamInfo->FTRoamInfo.preAuthFailList.numMACAddress = 0; |
| } |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_init11r_assoc_info |
| |
| \brief This function initializes 11r related neighbor roam data structures |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return CDF_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| CDF_STATUS csr_neighbor_roam_init11r_assoc_info(tpAniSirGlobal pMac) |
| { |
| CDF_STATUS status; |
| uint8_t i; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = NULL; |
| tpCsr11rAssocNeighborInfo pFTRoamInfo = NULL; |
| |
| for (i = 0; i < CSR_ROAM_SESSION_MAX; i++) { |
| pNeighborRoamInfo = &pMac->roam.neighborRoamInfo[i]; |
| pFTRoamInfo = &pNeighborRoamInfo->FTRoamInfo; |
| |
| pNeighborRoamInfo->is11rAssoc = false; |
| pNeighborRoamInfo->cfgParams.maxNeighborRetries = |
| pMac->roam.configParam.neighborRoamConfig. |
| nMaxNeighborRetries; |
| |
| pFTRoamInfo->neighborReportTimeout = |
| CSR_NEIGHBOR_ROAM_REPORT_QUERY_TIMEOUT; |
| pFTRoamInfo->PEPreauthRespTimeout = |
| CSR_NEIGHBOR_ROAM_PREAUTH_RSP_WAIT_MULTIPLIER * |
| pNeighborRoamInfo->cfgParams.neighborScanPeriod; |
| pFTRoamInfo->neighborRptPending = false; |
| pFTRoamInfo->preauthRspPending = false; |
| |
| pFTRoamInfo->currentNeighborRptRetryNum = 0; |
| pFTRoamInfo->numBssFromNeighborReport = 0; |
| |
| cdf_mem_zero(pFTRoamInfo->neighboReportBssInfo, |
| sizeof(tCsrNeighborReportBssInfo) * |
| MAX_BSS_IN_NEIGHBOR_RPT); |
| |
| status = csr_ll_open(pMac->hHdd, &pFTRoamInfo->preAuthDoneList); |
| if (CDF_STATUS_SUCCESS != status) { |
| sms_log(pMac, LOGE, |
| FL("LL Open of preauth done AP List failed")); |
| return CDF_STATUS_E_RESOURCES; |
| } |
| } |
| return status; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_init |
| |
| \brief This function initializes neighbor roam data structures |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return CDF_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| CDF_STATUS csr_neighbor_roam_init(tpAniSirGlobal pMac, uint8_t sessionId) |
| { |
| CDF_STATUS status; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| pNeighborRoamInfo->neighborRoamState = eCSR_NEIGHBOR_ROAM_STATE_CLOSED; |
| pNeighborRoamInfo->prevNeighborRoamState = |
| eCSR_NEIGHBOR_ROAM_STATE_CLOSED; |
| pNeighborRoamInfo->cfgParams.maxChannelScanTime = |
| pMac->roam.configParam.neighborRoamConfig.nNeighborScanMaxChanTime; |
| pNeighborRoamInfo->cfgParams.minChannelScanTime = |
| pMac->roam.configParam.neighborRoamConfig.nNeighborScanMinChanTime; |
| pNeighborRoamInfo->cfgParams.maxNeighborRetries = 0; |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold = |
| pMac->roam.configParam.neighborRoamConfig. |
| nNeighborLookupRssiThreshold; |
| pNeighborRoamInfo->cfgParams.delay_before_vdev_stop = |
| pMac->roam.configParam.neighborRoamConfig. |
| delay_before_vdev_stop; |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff = |
| pMac->roam.configParam.neighborRoamConfig. |
| nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff = |
| pMac->roam.configParam.neighborRoamConfig.nRoamRescanRssiDiff; |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt = |
| pMac->roam.configParam.neighborRoamConfig.nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt = |
| pMac->roam.configParam.neighborRoamConfig.nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight = |
| pMac->roam.configParam.neighborRoamConfig.nRoamBeaconRssiWeight; |
| pNeighborRoamInfo->cfgParams.neighborScanPeriod = |
| pMac->roam.configParam.neighborRoamConfig.nNeighborScanTimerPeriod; |
| pNeighborRoamInfo->cfgParams.neighborResultsRefreshPeriod = |
| pMac->roam.configParam.neighborRoamConfig. |
| nNeighborResultsRefreshPeriod; |
| pNeighborRoamInfo->cfgParams.emptyScanRefreshPeriod = |
| pMac->roam.configParam.neighborRoamConfig.nEmptyScanRefreshPeriod; |
| |
| pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels = |
| pMac->roam.configParam.neighborRoamConfig.neighborScanChanList. |
| numChannels; |
| if (pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels != 0) { |
| pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = |
| cdf_mem_malloc(pMac->roam.configParam.neighborRoamConfig. |
| neighborScanChanList.numChannels); |
| if (NULL == |
| pNeighborRoamInfo->cfgParams.channelInfo.ChannelList) { |
| sms_log(pMac, LOGE, |
| FL("Memory Allocation for CFG Channel List failed")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| } else { |
| pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| sms_log(pMac, LOGE, |
| FL("invalid neighbor roam channel list: %u"), |
| pNeighborRoamInfo->cfgParams.channelInfo.numOfChannels); |
| } |
| |
| /* Update the roam global structure from CFG */ |
| cdf_mem_copy(pNeighborRoamInfo->cfgParams.channelInfo.ChannelList, |
| pMac->roam.configParam.neighborRoamConfig. |
| neighborScanChanList.channelList, |
| pMac->roam.configParam.neighborRoamConfig. |
| neighborScanChanList.numChannels); |
| pNeighborRoamInfo->cfgParams.hi_rssi_scan_max_count = |
| pMac->roam.configParam.neighborRoamConfig. |
| nhi_rssi_scan_max_count; |
| pNeighborRoamInfo->cfgParams.hi_rssi_scan_rssi_delta = |
| pMac->roam.configParam.neighborRoamConfig. |
| nhi_rssi_scan_rssi_delta; |
| pNeighborRoamInfo->cfgParams.hi_rssi_scan_delay = |
| pMac->roam.configParam.neighborRoamConfig. |
| nhi_rssi_scan_delay; |
| pNeighborRoamInfo->cfgParams.hi_rssi_scan_rssi_ub = |
| pMac->roam.configParam.neighborRoamConfig. |
| nhi_rssi_scan_rssi_ub; |
| |
| cdf_zero_macaddr(&pNeighborRoamInfo->currAPbssid); |
| pNeighborRoamInfo->currentNeighborLookupThreshold = |
| pNeighborRoamInfo->cfgParams.neighborLookupThreshold; |
| pNeighborRoamInfo->currentOpportunisticThresholdDiff = |
| pNeighborRoamInfo->cfgParams.nOpportunisticThresholdDiff; |
| pNeighborRoamInfo->currentRoamRescanRssiDiff = |
| pNeighborRoamInfo->cfgParams.nRoamRescanRssiDiff; |
| pNeighborRoamInfo->currentRoamBmissFirstBcnt = |
| pNeighborRoamInfo->cfgParams.nRoamBmissFirstBcnt; |
| pNeighborRoamInfo->currentRoamBmissFinalBcnt = |
| pNeighborRoamInfo->cfgParams.nRoamBmissFinalBcnt; |
| pNeighborRoamInfo->currentRoamBeaconRssiWeight = |
| pNeighborRoamInfo->cfgParams.nRoamBeaconRssiWeight; |
| cdf_mem_set(&pNeighborRoamInfo->prevConnProfile, |
| sizeof(tCsrRoamConnectedProfile), 0); |
| |
| status = csr_ll_open(pMac->hHdd, &pNeighborRoamInfo->roamableAPList); |
| if (CDF_STATUS_SUCCESS != status) { |
| sms_log(pMac, LOGE, FL("LL Open of roam able AP List failed")); |
| cdf_mem_free(pNeighborRoamInfo->cfgParams.channelInfo. |
| ChannelList); |
| pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| return CDF_STATUS_E_RESOURCES; |
| } |
| |
| pNeighborRoamInfo->roamChannelInfo.currentChanIndex = |
| CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| numOfChannels = 0; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = |
| NULL; |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = false; |
| |
| status = csr_neighbor_roam_init11r_assoc_info(pMac); |
| if (CDF_STATUS_SUCCESS != status) { |
| sms_log(pMac, LOGE, FL("LL Open of roam able AP List failed")); |
| cdf_mem_free(pNeighborRoamInfo->cfgParams.channelInfo. |
| ChannelList); |
| pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| csr_ll_close(&pNeighborRoamInfo->roamableAPList); |
| return CDF_STATUS_E_RESOURCES; |
| } |
| |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION(pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, |
| sessionId) |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = false; |
| /* Set the Last Sent Cmd as RSO_STOP */ |
| pNeighborRoamInfo->last_sent_cmd = ROAM_SCAN_OFFLOAD_STOP; |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_close |
| |
| \brief This function closes/frees all the neighbor roam data structures |
| |
| \param pMac - The handle returned by mac_open. |
| \param sessionId - Session identifier |
| \return VOID |
| |
| ---------------------------------------------------------------------------*/ |
| void csr_neighbor_roam_close(tpAniSirGlobal pMac, uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| |
| if (eCSR_NEIGHBOR_ROAM_STATE_CLOSED == |
| pNeighborRoamInfo->neighborRoamState) { |
| sms_log(pMac, LOGW, |
| FL("Neighbor Roam Algorithm Already Closed")); |
| return; |
| } |
| |
| if (pNeighborRoamInfo->cfgParams.channelInfo.ChannelList) |
| cdf_mem_free(pNeighborRoamInfo->cfgParams.channelInfo. |
| ChannelList); |
| |
| pNeighborRoamInfo->cfgParams.channelInfo.ChannelList = NULL; |
| |
| /* Should free up the nodes in the list before closing the double Linked list */ |
| csr_neighbor_roam_free_roamable_bss_list(pMac, |
| &pNeighborRoamInfo->roamableAPList); |
| csr_ll_close(&pNeighborRoamInfo->roamableAPList); |
| |
| if (pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| ChannelList) { |
| cdf_mem_free(pNeighborRoamInfo->roamChannelInfo. |
| currentChannelListInfo.ChannelList); |
| } |
| |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = |
| NULL; |
| pNeighborRoamInfo->roamChannelInfo.currentChanIndex = |
| CSR_NEIGHBOR_ROAM_INVALID_CHANNEL_INDEX; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo. |
| numOfChannels = 0; |
| pNeighborRoamInfo->roamChannelInfo.currentChannelListInfo.ChannelList = |
| NULL; |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = false; |
| |
| /* Free the profile.. */ |
| csr_release_profile(pMac, &pNeighborRoamInfo->csrNeighborRoamProfile); |
| csr_roam_free_connect_profile(&pNeighborRoamInfo->prevConnProfile); |
| pNeighborRoamInfo->FTRoamInfo.currentNeighborRptRetryNum = 0; |
| pNeighborRoamInfo->FTRoamInfo.numBssFromNeighborReport = 0; |
| cdf_mem_zero(pNeighborRoamInfo->FTRoamInfo.neighboReportBssInfo, |
| sizeof(tCsrNeighborReportBssInfo) * |
| MAX_BSS_IN_NEIGHBOR_RPT); |
| csr_neighbor_roam_free_roamable_bss_list(pMac, |
| &pNeighborRoamInfo->FTRoamInfo. |
| preAuthDoneList); |
| csr_ll_close(&pNeighborRoamInfo->FTRoamInfo.preAuthDoneList); |
| |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION(pMac, |
| eCSR_NEIGHBOR_ROAM_STATE_CLOSED, sessionId) |
| |
| return; |
| } |
| |
| /** |
| * csr_neighbor_roam_request_handoff() - Handoff to a different AP |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * |
| * This function triggers actual switching from one AP to the new AP. |
| * It issues disassociate with reason code as Handoff and CSR as a part of |
| * handling disassoc rsp, issues reassociate to the new AP |
| * |
| * Return: none |
| */ |
| void csr_neighbor_roam_request_handoff(tpAniSirGlobal mac_ctx, |
| uint8_t session_id) |
| { |
| tCsrRoamInfo roam_info; |
| tpCsrNeighborRoamControlInfo neighbor_roam_info = |
| &mac_ctx->roam.neighborRoamInfo[session_id]; |
| tCsrNeighborRoamBSSInfo handoff_node; |
| uint32_t roamid = 0; |
| CDF_STATUS status; |
| |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, "%s session_id=%d", |
| __func__, session_id); |
| |
| if (neighbor_roam_info->neighborRoamState != |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) { |
| sms_log(mac_ctx, LOGE, |
| FL("Roam requested when Neighbor roam is in %s state"), |
| mac_trace_get_neighbour_roam_state( |
| neighbor_roam_info->neighborRoamState)); |
| return; |
| } |
| |
| if (false == csr_neighbor_roam_get_handoff_ap_info(mac_ctx, |
| &handoff_node, session_id)) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| FL("failed to obtain handoff AP")); |
| return; |
| } |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| FL("HANDOFF CANDIDATE BSSID "MAC_ADDRESS_STR), |
| MAC_ADDR_ARRAY(handoff_node.pBssDescription->bssId)); |
| |
| cdf_mem_zero(&roam_info, sizeof(tCsrRoamInfo)); |
| csr_roam_call_callback(mac_ctx, session_id, &roam_info, roamid, |
| eCSR_ROAM_FT_START, eSIR_SME_SUCCESS); |
| |
| cdf_mem_zero(&roam_info, sizeof(tCsrRoamInfo)); |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION |
| (mac_ctx, eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING, session_id) |
| |
| csr_neighbor_roam_send_lfr_metric_event(mac_ctx, session_id, |
| handoff_node.pBssDescription->bssId, |
| eCSR_ROAM_HANDOVER_SUCCESS); |
| /* Free the profile.. Just to make sure we dont leak memory here */ |
| csr_release_profile(mac_ctx, |
| &neighbor_roam_info->csrNeighborRoamProfile); |
| /* |
| * Create the Handoff AP profile. Copy the currently connected profile |
| * and update only the BSSID and channel number. This should happen |
| * before issuing disconnect |
| */ |
| status = csr_roam_copy_connected_profile(mac_ctx, session_id, |
| &neighbor_roam_info->csrNeighborRoamProfile); |
| if (CDF_STATUS_SUCCESS != status) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_ERROR, |
| FL("csr_roam_copy_connected_profile failed %d"), |
| status); |
| return; |
| } |
| cdf_mem_copy(neighbor_roam_info->csrNeighborRoamProfile.BSSIDs.bssid, |
| handoff_node.pBssDescription->bssId, sizeof(tSirMacAddr)); |
| neighbor_roam_info->csrNeighborRoamProfile.ChannelInfo.ChannelList[0] = |
| handoff_node.pBssDescription->channelId; |
| |
| NEIGHBOR_ROAM_DEBUG(mac_ctx, LOGW, |
| " csr_roamHandoffRequested: disassociating with current AP"); |
| |
| if (!CDF_IS_STATUS_SUCCESS |
| (csr_roam_issue_disassociate_cmd |
| (mac_ctx, session_id, |
| eCSR_DISCONNECT_REASON_HANDOFF))) { |
| sms_log(mac_ctx, LOGW, |
| "csr_roamHandoffRequested: fail to issue disassociate"); |
| return; |
| } |
| /* notify HDD for handoff, providing the BSSID too */ |
| roam_info.reasonCode = eCsrRoamReasonBetterAP; |
| |
| cdf_mem_copy(roam_info.bssid.bytes, |
| handoff_node.pBssDescription->bssId, |
| sizeof(struct cdf_mac_addr)); |
| |
| csr_roam_call_callback(mac_ctx, session_id, &roam_info, 0, |
| eCSR_ROAM_ROAMING_START, eCSR_ROAM_RESULT_NONE); |
| |
| return; |
| } |
| |
| /** |
| * csr_neighbor_roam_is_handoff_in_progress() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * |
| * This function returns whether handoff is in progress or not based on |
| * the current neighbor roam state |
| * |
| * Return: true if reassoc in progress, false otherwise |
| */ |
| bool csr_neighbor_roam_is_handoff_in_progress(tpAniSirGlobal pMac, uint8_t sessionId) |
| { |
| if (eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING == |
| pMac->roam.neighborRoamInfo[sessionId].neighborRoamState) |
| return true; |
| |
| return false; |
| } |
| /** |
| * csr_neighbor_roam_is11r_assoc() - Check if association type is 11R |
| * @mac_ctx: MAC Global context |
| * @session_id: Session ID |
| * |
| * Return: true if 11r Association, false otherwise. |
| */ |
| bool csr_neighbor_roam_is11r_assoc(tpAniSirGlobal mac_ctx, uint8_t session_id) |
| { |
| return mac_ctx->roam.neighborRoamInfo[session_id].is11rAssoc; |
| } |
| |
| /** |
| * csr_neighbor_roam_get_handoff_ap_info - Identifies the best AP for roaming |
| * |
| * @pMac: mac context |
| * @session_id: Session Id |
| * @hand_off_node: AP node that is the handoff candidate returned |
| * |
| * This function returns the best possible AP for handoff. For 11R case, it |
| * returns the 1st entry from pre-auth done list. For non-11r case, it returns |
| * the 1st entry from roamable AP list |
| * |
| * Return: true if able find handoff AP, false otherwise |
| */ |
| |
| bool csr_neighbor_roam_get_handoff_ap_info(tpAniSirGlobal pMac, |
| tpCsrNeighborRoamBSSInfo hand_off_node, |
| uint8_t session_id) |
| { |
| tpCsrNeighborRoamControlInfo ngbr_roam_info = |
| &pMac->roam.neighborRoamInfo[session_id]; |
| tpCsrNeighborRoamBSSInfo bss_node = NULL; |
| |
| if (NULL == hand_off_node) { |
| CDF_ASSERT(NULL != hand_off_node); |
| return false; |
| } |
| if (ngbr_roam_info->is11rAssoc) { |
| /* Always the BSS info in the head is the handoff candidate */ |
| bss_node = csr_neighbor_roam_next_roamable_ap( |
| pMac, |
| &ngbr_roam_info->FTRoamInfo.preAuthDoneList, |
| NULL); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, |
| FL("Number of Handoff candidates = %d"), |
| csr_ll_count(& |
| ngbr_roam_info->FTRoamInfo.preAuthDoneList)); |
| } else |
| #ifdef FEATURE_WLAN_ESE |
| if (ngbr_roam_info->isESEAssoc) { |
| /* Always the BSS info in the head is the handoff candidate */ |
| bss_node = |
| csr_neighbor_roam_next_roamable_ap(pMac, |
| &ngbr_roam_info->FTRoamInfo.preAuthDoneList, |
| NULL); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, |
| FL("Number of Handoff candidates = %d"), |
| csr_ll_count(&ngbr_roam_info->FTRoamInfo. |
| preAuthDoneList)); |
| } else |
| #endif |
| if (csr_roam_is_fast_roam_enabled(pMac, session_id)) { |
| /* Always the BSS info in the head is the handoff candidate */ |
| bss_node = |
| csr_neighbor_roam_next_roamable_ap(pMac, |
| &ngbr_roam_info->FTRoamInfo.preAuthDoneList, |
| NULL); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, |
| FL("Number of Handoff candidates = %d"), |
| csr_ll_count( |
| &ngbr_roam_info->FTRoamInfo.preAuthDoneList)); |
| } else { |
| bss_node = |
| csr_neighbor_roam_next_roamable_ap(pMac, |
| &ngbr_roam_info->roamableAPList, |
| NULL); |
| NEIGHBOR_ROAM_DEBUG(pMac, LOG1, |
| FL("Number of Handoff candidates = %d"), |
| csr_ll_count(&ngbr_roam_info->roamableAPList)); |
| } |
| if (NULL == bss_node) |
| return false; |
| cdf_mem_copy(hand_off_node, bss_node, sizeof(tCsrNeighborRoamBSSInfo)); |
| return true; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| \brief This function returns true if preauth is completed |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return bool |
| |
| ---------------------------------------------------------------------------*/ |
| bool csr_neighbor_roam_state_preauth_done(tpAniSirGlobal pMac, uint8_t sessionId) |
| { |
| return pMac->roam.neighborRoamInfo[sessionId].neighborRoamState == |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| \brief In the event that we are associated with AP1 and we have |
| completed pre auth with AP2. Then we receive a deauth/disassoc from |
| AP1. |
| At this point neighbor roam is in pre auth done state, pre auth timer |
| is running. We now handle this case by stopping timer and clearing |
| the pre-auth state. We basically clear up and just go to disconnected |
| state. |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return bool |
| ---------------------------------------------------------------------------*/ |
| void csr_neighbor_roam_tranistion_preauth_done_to_disconnected(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| tCsrRoamSession *session = CSR_GET_SESSION(pMac, sessionId); |
| |
| if (!session) { |
| CDF_TRACE(CDF_MODULE_ID_SME, CDF_TRACE_LEVEL_DEBUG, |
| FL("session is NULL")); |
| return; |
| } |
| |
| if (pNeighborRoamInfo->neighborRoamState != |
| eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE) |
| return; |
| |
| /* Stop timer */ |
| cdf_mc_timer_stop(&session->ftSmeContext.preAuthReassocIntvlTimer); |
| |
| /* Transition to init state */ |
| CSR_NEIGHBOR_ROAM_STATE_TRANSITION(pMac, eCSR_NEIGHBOR_ROAM_STATE_INIT, |
| sessionId) |
| pNeighborRoamInfo->roamChannelInfo.IAPPNeighborListReceived = false; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| \brief This function returns true if STA is in the middle of roaming states |
| |
| \param halHandle - The handle from HDD context. |
| \param sessionId - Session identifier |
| |
| \return bool |
| |
| ---------------------------------------------------------------------------*/ |
| bool csr_neighbor_middle_of_roaming(tpAniSirGlobal pMac, uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| bool val = (eCSR_NEIGHBOR_ROAM_STATE_REASSOCIATING == |
| pNeighborRoamInfo->neighborRoamState) || |
| (eCSR_NEIGHBOR_ROAM_STATE_PREAUTHENTICATING == |
| pNeighborRoamInfo->neighborRoamState) || |
| (eCSR_NEIGHBOR_ROAM_STATE_PREAUTH_DONE == |
| pNeighborRoamInfo->neighborRoamState); |
| return val; |
| } |
| |
| /** |
| * csr_neighbor_roam_candidate_found_ind_hdlr() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @msg_buf: pointer to msg buff |
| * |
| * This function is called by CSR as soon as TL posts the candidate |
| * found indication to SME via MC thread |
| * |
| * Return: CDF_STATUS_SUCCESS on success, corresponding error code otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_candidate_found_ind_hdlr(tpAniSirGlobal pMac, void *pMsg) |
| { |
| tSirSmeCandidateFoundInd *pSirSmeCandidateFoundInd = |
| (tSirSmeCandidateFoundInd *) pMsg; |
| uint32_t sessionId = pSirSmeCandidateFoundInd->sessionId; |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| |
| sms_log(pMac, LOG1, FL("Received indication from firmware")); |
| |
| /* we must be in connected state, if not ignore it */ |
| if ((eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != |
| pNeighborRoamInfo->neighborRoamState) |
| || (pNeighborRoamInfo->uOsRequestedHandoff)) { |
| sms_log(pMac, LOGE, |
| FL |
| ("Received in not CONNECTED state OR uOsRequestedHandoff is set. Ignore it")); |
| status = CDF_STATUS_E_FAILURE; |
| } else { |
| /* Firmware indicated that roaming candidate is found. Beacons |
| * are already in the SME scan results table. |
| * Process the results for choosing best roaming candidate. |
| */ |
| csr_save_scan_results(pMac, eCsrScanCandidateFound, |
| sessionId); |
| /* Future enhancements: |
| * If firmware tags candidate beacons, give them preference |
| * for roaming. |
| * Age out older entries so that new candidate beacons |
| * will get preference. |
| */ |
| status = csr_neighbor_roam_process_scan_complete(pMac, |
| sessionId); |
| if (CDF_STATUS_SUCCESS != status) { |
| sms_log(pMac, LOGE, |
| FL("Neighbor scan process complete failed with status %d"), |
| status); |
| return CDF_STATUS_E_FAILURE; |
| } |
| } |
| |
| return status; |
| } |
| |
| /** |
| * csr_neighbor_roam_process_handoff_req - Processes handoff request |
| * |
| * @mac_ctx Pointer to mac context |
| * @session_id SME session id |
| * |
| * This function is called start with the handoff process. First do a |
| * SSID scan for the BSSID provided. |
| * |
| * Return: status |
| */ |
| CDF_STATUS csr_neighbor_roam_process_handoff_req( |
| tpAniSirGlobal mac_ctx, |
| uint8_t session_id) |
| { |
| tpCsrNeighborRoamControlInfo roam_ctrl_info = |
| &mac_ctx->roam.neighborRoamInfo[session_id]; |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| uint32_t roam_id; |
| tCsrRoamProfile *profile = NULL; |
| tCsrRoamSession *session = CSR_GET_SESSION(mac_ctx, session_id); |
| uint8_t i = 0; |
| |
| if (NULL == session) { |
| sms_log(mac_ctx, LOGE, FL("session is NULL ")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| roam_id = GET_NEXT_ROAM_ID(&mac_ctx->roam); |
| profile = cdf_mem_malloc(sizeof(tCsrRoamProfile)); |
| if (NULL == profile) { |
| sms_log(mac_ctx, LOGE, FL("Memory alloc failed")); |
| return CDF_STATUS_E_NOMEM; |
| } |
| cdf_mem_set(profile, sizeof(tCsrRoamProfile), 0); |
| status = |
| csr_roam_copy_profile(mac_ctx, profile, |
| session->pCurRoamProfile); |
| if (!CDF_IS_STATUS_SUCCESS(status)) { |
| sms_log(mac_ctx, LOGE, FL("Profile copy failed")); |
| goto end; |
| } |
| /* Add the BSSID & Channel */ |
| profile->BSSIDs.numOfBSSIDs = 1; |
| if (NULL == profile->BSSIDs.bssid) { |
| profile->BSSIDs.bssid = |
| cdf_mem_malloc(sizeof(tSirMacAddr) * |
| profile->BSSIDs.numOfBSSIDs); |
| if (NULL == profile->BSSIDs.bssid) { |
| sms_log(mac_ctx, LOGE, FL("mem alloc failed for BSSID")); |
| status = CDF_STATUS_E_NOMEM; |
| goto end; |
| } |
| } |
| |
| cdf_mem_zero(profile->BSSIDs.bssid, |
| sizeof(tSirMacAddr) * |
| profile->BSSIDs.numOfBSSIDs); |
| |
| /* Populate the BSSID from handoff info received from HDD */ |
| for (i = 0; i < profile->BSSIDs.numOfBSSIDs; i++) { |
| cdf_copy_macaddr(&profile->BSSIDs.bssid[i], |
| &roam_ctrl_info->handoffReqInfo.bssid); |
| } |
| |
| profile->ChannelInfo.numOfChannels = 1; |
| if (NULL == profile->ChannelInfo.ChannelList) { |
| profile->ChannelInfo.ChannelList = |
| cdf_mem_malloc(sizeof(*profile-> |
| ChannelInfo.ChannelList) * |
| profile->ChannelInfo.numOfChannels); |
| if (NULL == profile->ChannelInfo.ChannelList) { |
| sms_log(mac_ctx, LOGE, |
| FL("mem alloc failed for ChannelList")); |
| status = CDF_STATUS_E_NOMEM; |
| goto end; |
| } |
| } |
| profile->ChannelInfo.ChannelList[0] = |
| roam_ctrl_info->handoffReqInfo.channel; |
| |
| /* do a SSID scan */ |
| status = |
| csr_scan_for_ssid(mac_ctx, session_id, profile, roam_id, false); |
| if (!CDF_IS_STATUS_SUCCESS(status)) { |
| sms_log(mac_ctx, LOGE, FL("SSID scan failed")); |
| } |
| |
| end: |
| if (NULL != profile) { |
| csr_release_profile(mac_ctx, profile); |
| cdf_mem_free(profile); |
| } |
| |
| return status; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_sssid_scan_done |
| |
| \brief This function is called once SSID scan is done. If SSID scan failed |
| to find our candidate add an entry to csr scan cache ourself before starting |
| the handoff process |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return CDF_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| CDF_STATUS csr_neighbor_roam_sssid_scan_done(tpAniSirGlobal pMac, |
| uint8_t sessionId, CDF_STATUS status) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| CDF_STATUS hstatus; |
| |
| sms_log(pMac, LOGE, FL("called ")); |
| |
| /* we must be in connected state, if not ignore it */ |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != |
| pNeighborRoamInfo->neighborRoamState) { |
| sms_log(pMac, LOGE, |
| FL("Received in not CONNECTED state. Ignore it")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| /* if SSID scan failed to find our candidate add an entry to csr scan cache ourself */ |
| if (!CDF_IS_STATUS_SUCCESS(status)) { |
| sms_log(pMac, LOGE, FL("Add an entry to csr scan cache")); |
| hstatus = csr_scan_create_entry_in_scan_cache(pMac, sessionId, |
| pNeighborRoamInfo-> |
| handoffReqInfo.bssid, |
| pNeighborRoamInfo-> |
| handoffReqInfo.channel); |
| if (CDF_STATUS_SUCCESS != hstatus) { |
| sms_log(pMac, LOGE, |
| FL |
| ("csr_scan_create_entry_in_scan_cache failed with status %d"), |
| hstatus); |
| return CDF_STATUS_E_FAILURE; |
| } |
| } |
| |
| /* Now we have completed scanning for the candidate provided by HDD. Let move on to HO */ |
| hstatus = csr_neighbor_roam_process_scan_complete(pMac, sessionId); |
| |
| if (CDF_STATUS_SUCCESS != hstatus) { |
| sms_log(pMac, LOGE, |
| FL |
| ("Neighbor scan process complete failed with status %d"), |
| hstatus); |
| return CDF_STATUS_E_FAILURE; |
| } |
| return CDF_STATUS_SUCCESS; |
| } |
| |
| |
| /** |
| * csr_neighbor_roam_handoff_req_hdlr - Processes handoff request |
| * @mac_ctx Pointer to mac context |
| * @msg message sent to HDD |
| * |
| * This function is called by CSR as soon as it gets a handoff request |
| * to SME via MC thread |
| * |
| * Return: status |
| */ |
| CDF_STATUS csr_neighbor_roam_handoff_req_hdlr( |
| tpAniSirGlobal mac_ctx, void *msg) |
| { |
| tAniHandoffReq *handoff_req = (tAniHandoffReq *) msg; |
| uint32_t session_id = handoff_req->sessionId; |
| tpCsrNeighborRoamControlInfo roam_ctrl_info = |
| &mac_ctx->roam.neighborRoamInfo[session_id]; |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| |
| /* we must be in connected state, if not ignore it */ |
| if (eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != |
| roam_ctrl_info->neighborRoamState) { |
| sms_log(mac_ctx, LOGE, |
| FL("Received in not CONNECTED state. Ignore it")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| /* save the handoff info came from HDD as part of the reassoc req */ |
| handoff_req = (tAniHandoffReq *) msg; |
| if (NULL == handoff_req) { |
| sms_log(mac_ctx, LOGE, FL("Received msg is NULL")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| |
| /* sanity check */ |
| if (true == cdf_mem_compare(handoff_req->bssid, |
| roam_ctrl_info->currAPbssid.bytes, |
| sizeof(tSirMacAddr))) { |
| sms_log(mac_ctx, LOGE, |
| FL |
| ("Received req has same BSSID as current AP!!")); |
| return CDF_STATUS_E_FAILURE; |
| } |
| roam_ctrl_info->handoffReqInfo.channel = |
| handoff_req->channel; |
| roam_ctrl_info->handoffReqInfo.src = |
| handoff_req->handoff_src; |
| cdf_mem_copy(&roam_ctrl_info->handoffReqInfo.bssid.bytes, |
| &handoff_req->bssid, CDF_MAC_ADDR_SIZE); |
| roam_ctrl_info->uOsRequestedHandoff = 1; |
| status = csr_roam_offload_scan(mac_ctx, session_id, |
| ROAM_SCAN_OFFLOAD_STOP, |
| REASON_OS_REQUESTED_ROAMING_NOW); |
| if (CDF_STATUS_SUCCESS != status) { |
| sms_log(mac_ctx, LOGE, |
| FL("csr_roam_offload_scan failed")); |
| roam_ctrl_info->uOsRequestedHandoff = 0; |
| } |
| return status; |
| } |
| |
| /** |
| * csr_neighbor_roam_proceed_with_handoff_req() |
| * |
| * @mac_ctx: Pointer to Global MAC structure |
| * @session_id: Session ID |
| * |
| * This function is called by CSR as soon as it gets rsp back for |
| * ROAM_SCAN_OFFLOAD_STOP with reason REASON_OS_REQUESTED_ROAMING_NOW |
| * |
| * Return: CDF_STATUS_SUCCESS on success, corresponding error code otherwise |
| */ |
| CDF_STATUS csr_neighbor_roam_proceed_with_handoff_req(tpAniSirGlobal pMac, |
| uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| CDF_STATUS status = CDF_STATUS_SUCCESS; |
| /* we must be in connected state, if not ignore it */ |
| if ((eCSR_NEIGHBOR_ROAM_STATE_CONNECTED != |
| pNeighborRoamInfo->neighborRoamState) |
| || (!pNeighborRoamInfo->uOsRequestedHandoff)) { |
| sms_log(pMac, LOGE, |
| FL |
| ("Received in not CONNECTED state or uOsRequestedHandoff is not set. Ignore it")); |
| status = CDF_STATUS_E_FAILURE; |
| } else { |
| /* Let's go ahead with handoff */ |
| status = csr_neighbor_roam_process_handoff_req(pMac, sessionId); |
| } |
| if (!CDF_IS_STATUS_SUCCESS(status)) { |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| } |
| return status; |
| } |
| |
| /* --------------------------------------------------------------------------- |
| |
| \fn csr_neighbor_roam_start_lfr_scan |
| |
| \brief This function is called if HDD requested handoff failed for some |
| reason. start the LFR logic at that point.By the time, this function is |
| called, a STOP command has already been issued. |
| |
| \param pMac - The handle returned by mac_open. |
| |
| \return CDF_STATUS_SUCCESS on success, corresponding error code otherwise |
| |
| ---------------------------------------------------------------------------*/ |
| CDF_STATUS csr_neighbor_roam_start_lfr_scan(tpAniSirGlobal pMac, uint8_t sessionId) |
| { |
| tpCsrNeighborRoamControlInfo pNeighborRoamInfo = |
| &pMac->roam.neighborRoamInfo[sessionId]; |
| pNeighborRoamInfo->uOsRequestedHandoff = 0; |
| /* There is no candidate or We are not roaming Now. |
| * Inform the FW to restart Roam Offload Scan */ |
| csr_roam_offload_scan(pMac, sessionId, ROAM_SCAN_OFFLOAD_START, |
| REASON_NO_CAND_FOUND_OR_NOT_ROAMING_NOW); |
| |
| return CDF_STATUS_SUCCESS; |
| } |